5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) Make generated asm have non-executable stack.
8 [Contributed by Google <agl@google.com>]
10 *) New function OPENSSL_gmtime_diff to find the difference in days
11 and seconds between two tm structures. This will be used to provide
12 additional functionality for ASN1_TIME.
15 *) New -sigopt option to the ca, req and x509 utilities. Additional
16 signature parameters can be passed using this option and in
20 *) Add RSA PSS signing function. This will generate and set the
21 appropriate AlgorithmIdentifiers for PSS based on those in the
22 corresponding EVP_MD_CTX structure. No application support yet.
25 *) Support for companion algorithm specific ASN1 signing routines.
26 New function ASN1_item_sign_ctx() signs a pre-initialised
27 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
28 the appropriate parameters.
31 *) Add new algorithm specific ASN1 verification initialisation function
32 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
33 handling will be the same no matter what EVP_PKEY_METHOD is used.
34 Add a PSS handler to support verification of PSS signatures: checked
35 against a number of sample certificates.
38 *) Add signature printing for PSS. Add PSS OIDs.
39 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
41 *) Add algorithm specific signature printing. An individual ASN1 method
42 can now print out signatures instead of the standard hex dump.
44 More complex signatures (e.g. PSS) can print out more meaningful
45 information. Include DSA version that prints out the signature
49 *) Add -trusted_first option which attempts to find certificates in the
50 trusted store even if an untrusted chain is also supplied.
53 *) Initial experimental support for explicitly trusted non-root CAs.
54 OpenSSL still tries to build a complete chain to a root but if an
55 intermediate CA has a trust setting included that is used. The first
56 setting is used: whether to trust or reject.
59 *) New -verify_name option in command line utilities to set verification
63 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
64 Add CMAC pkey methods.
67 *) Experiemental regnegotiation in s_server -www mode. If the client
68 browses /reneg connection is renegotiated. If /renegcert it is
69 renegotiated requesting a certificate.
72 *) Add an "external" session cache for debugging purposes to s_server. This
73 should help trace issues which normally are only apparent in deployed
74 multi-process servers.
77 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
78 a few changes are required:
80 Add SSL_OP_NO_TLSv1_1 flag.
82 Update version checking logic to handle version 1.1.
83 Add explicit IV handling (ported from DTLS code).
84 Add command line options to s_client/s_server.
87 *) Experiemental password based recipient info support for CMS library:
91 *) Split password based encryption into PBES2 and PBKDF2 functions. This
92 neatly separates the code into cipher and PBE sections and is required
93 for some algorithms that split PBES2 into separate pieces (such as
97 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
98 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
99 BIO_set_cipher() and some obscure PEM functions were changed so they
100 can now return an error. The RAND changes required a change to the
101 RAND_METHOD structure.
104 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
105 a gcc attribute to warn if the result of a function is ignored. This
106 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
107 whose return value is often ignored.
110 Changes between 0.9.8n and 1.0.0 [xx XXX xxxx]
112 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
113 context. The operation can be customised via the ctrl mechanism in
114 case ENGINEs want to include additional functionality.
117 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
120 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
121 output hashes compatible with older versions of OpenSSL.
122 [Willy Weisz <weisz@vcpc.univie.ac.at>]
124 *) Fix compression algorithm handling: if resuming a session use the
125 compression algorithm of the resumed session instead of determining
126 it from client hello again. Don't allow server to change algorithm.
129 *) Add load_crls() function to apps tidying load_certs() too. Add option
130 to verify utility to allow additional CRLs to be included.
133 *) Update OCSP request code to permit adding custom headers to the request:
134 some responders need this.
137 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
139 [Julia Lawall <julia@diku.dk>]
141 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
142 needlessly dereferenced structures, used obsolete functions and
143 didn't handle all updated verify codes correctly.
146 *) Disable MD2 in the default configuration.
149 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
150 indicate the initial BIO being pushed or popped. This makes it possible
151 to determine whether the BIO is the one explicitly called or as a result
152 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
153 it handles reference counts correctly and doesn't zero out the I/O bio
154 when it is not being explicitly popped. WARNING: applications which
155 included workarounds for the old buggy behaviour will need to be modified
156 or they could free up already freed BIOs.
159 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
160 renaming to all platforms (within the 0.9.8 branch, this was
161 done conditionally on Netware platforms to avoid a name clash).
162 [Guenter <lists@gknw.net>]
164 *) Add ECDHE and PSK support to DTLS.
165 [Michael Tuexen <tuexen@fh-muenster.de>]
167 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
171 *) Add "missing" function EVP_MD_flags() (without this the only way to
172 retrieve a digest flags is by accessing the structure directly. Update
173 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
174 or cipher is registered as in the "from" argument. Print out all
175 registered digests in the dgst usage message instead of manually
176 attempting to work them out.
179 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
180 this allows the use of compression and extensions. Change default cipher
181 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
182 by default unless an application cipher string requests it.
185 *) Alter match criteria in PKCS12_parse(). It used to try to use local
186 key ids to find matching certificates and keys but some PKCS#12 files
187 don't follow the (somewhat unwritten) rules and this strategy fails.
188 Now just gather all certificates together and the first private key
189 then look for the first certificate that matches the key.
192 *) Support use of registered digest and cipher names for dgst and cipher
193 commands instead of having to add each one as a special case. So now
200 openssl dgst -sha256 foo
202 and this works for ENGINE based algorithms too.
206 *) Update Gost ENGINE to support parameter files.
207 [Victor B. Wagner <vitus@cryptocom.ru>]
209 *) Support GeneralizedTime in ca utility.
210 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
212 *) Enhance the hash format used for certificate directory links. The new
213 form uses the canonical encoding (meaning equivalent names will work
214 even if they aren't identical) and uses SHA1 instead of MD5. This form
215 is incompatible with the older format and as a result c_rehash should
216 be used to rebuild symbolic links.
219 *) Make PKCS#8 the default write format for private keys, replacing the
220 traditional format. This form is standardised, more secure and doesn't
221 include an implicit MD5 dependency.
224 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
225 committed to OpenSSL should pass this lot as a minimum.
228 *) Add session ticket override functionality for use by EAP-FAST.
229 [Jouni Malinen <j@w1.fi>]
231 *) Modify HMAC functions to return a value. Since these can be implemented
232 in an ENGINE errors can occur.
235 *) Type-checked OBJ_bsearch_ex.
238 *) Type-checked OBJ_bsearch. Also some constification necessitated
239 by type-checking. Still to come: TXT_DB, bsearch(?),
240 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
244 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
245 seconds to a tm structure directly, instead of going through OS
246 specific date routines. This avoids any issues with OS routines such
247 as the year 2038 bug. New *_adj() functions for ASN1 time structures
248 and X509_time_adj_ex() to cover the extended range. The existing
249 X509_time_adj() is still usable and will no longer have any date issues.
252 *) Delta CRL support. New use deltas option which will attempt to locate
253 and search any appropriate delta CRLs available.
255 This work was sponsored by Google.
258 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
259 code and add additional score elements. Validate alternate CRL paths
260 as part of the CRL checking and indicate a new error "CRL path validation
261 error" in this case. Applications wanting additional details can use
262 the verify callback and check the new "parent" field. If this is not
263 NULL CRL path validation is taking place. Existing applications wont
264 see this because it requires extended CRL support which is off by
267 This work was sponsored by Google.
270 *) Support for freshest CRL extension.
272 This work was sponsored by Google.
275 *) Initial indirect CRL support. Currently only supported in the CRLs
276 passed directly and not via lookup. Process certificate issuer
277 CRL entry extension and lookup CRL entries by bother issuer name
278 and serial number. Check and process CRL issuer entry in IDP extension.
280 This work was sponsored by Google.
283 *) Add support for distinct certificate and CRL paths. The CRL issuer
284 certificate is validated separately in this case. Only enabled if
285 an extended CRL support flag is set: this flag will enable additional
286 CRL functionality in future.
288 This work was sponsored by Google.
291 *) Add support for policy mappings extension.
293 This work was sponsored by Google.
296 *) Fixes to pathlength constraint, self issued certificate handling,
297 policy processing to align with RFC3280 and PKITS tests.
299 This work was sponsored by Google.
302 *) Support for name constraints certificate extension. DN, email, DNS
303 and URI types are currently supported.
305 This work was sponsored by Google.
308 *) To cater for systems that provide a pointer-based thread ID rather
309 than numeric, deprecate the current numeric thread ID mechanism and
310 replace it with a structure and associated callback type. This
311 mechanism allows a numeric "hash" to be extracted from a thread ID in
312 either case, and on platforms where pointers are larger than 'long',
313 mixing is done to help ensure the numeric 'hash' is usable even if it
314 can't be guaranteed unique. The default mechanism is to use "&errno"
315 as a pointer-based thread ID to distinguish between threads.
317 Applications that want to provide their own thread IDs should now use
318 CRYPTO_THREADID_set_callback() to register a callback that will call
319 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
321 Note that ERR_remove_state() is now deprecated, because it is tied
322 to the assumption that thread IDs are numeric. ERR_remove_state(0)
323 to free the current thread's error state should be replaced by
324 ERR_remove_thread_state(NULL).
326 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
327 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
328 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
329 application was previously providing a numeric thread callback that
330 was inappropriate for distinguishing threads, then uniqueness might
331 have been obtained with &errno that happened immediately in the
332 intermediate development versions of OpenSSL; this is no longer the
333 case, the numeric thread callback will now override the automatic use
335 [Geoff Thorpe, with help from Bodo Moeller]
337 *) Initial support for different CRL issuing certificates. This covers a
338 simple case where the self issued certificates in the chain exist and
339 the real CRL issuer is higher in the existing chain.
341 This work was sponsored by Google.
344 *) Removed effectively defunct crypto/store from the build.
347 *) Revamp of STACK to provide stronger type-checking. Still to come:
348 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
349 ASN1_STRING, CONF_VALUE.
352 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
353 RAM on SSL connections. This option can save about 34k per idle SSL.
356 *) Revamp of LHASH to provide stronger type-checking. Still to come:
357 STACK, TXT_DB, bsearch, qsort.
360 *) Initial support for Cryptographic Message Syntax (aka CMS) based
361 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
362 support for data, signedData, compressedData, digestedData and
363 encryptedData, envelopedData types included. Scripts to check against
364 RFC4134 examples draft and interop and consistency checks of many
365 content types and variants.
368 *) Add options to enc utility to support use of zlib compression BIO.
371 *) Extend mk1mf to support importing of options and assembly language
372 files from Configure script, currently only included in VC-WIN32.
373 The assembly language rules can now optionally generate the source
374 files from the associated perl scripts.
377 *) Implement remaining functionality needed to support GOST ciphersuites.
378 Interop testing has been performed using CryptoPro implementations.
379 [Victor B. Wagner <vitus@cryptocom.ru>]
381 *) s390x assembler pack.
384 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
388 *) Implement Opaque PRF Input TLS extension as specified in
389 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
390 official specification yet and no extension type assignment by
391 IANA exists, this extension (for now) will have to be explicitly
392 enabled when building OpenSSL by providing the extension number
393 to use. For example, specify an option
395 -DTLSEXT_TYPE_opaque_prf_input=0x9527
397 to the "config" or "Configure" script to enable the extension,
398 assuming extension number 0x9527 (which is a completely arbitrary
399 and unofficial assignment based on the MD5 hash of the Internet
400 Draft). Note that by doing so, you potentially lose
401 interoperability with other TLS implementations since these might
402 be using the same extension number for other purposes.
404 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
405 opaque PRF input value to use in the handshake. This will create
406 an interal copy of the length-'len' string at 'src', and will
407 return non-zero for success.
409 To get more control and flexibility, provide a callback function
412 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
413 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
417 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
420 Callback function 'cb' will be called in handshakes, and is
421 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
422 Argument 'arg' is for application purposes (the value as given to
423 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
424 be provided to the callback function). The callback function
425 has to return non-zero to report success: usually 1 to use opaque
426 PRF input just if possible, or 2 to enforce use of the opaque PRF
427 input. In the latter case, the library will abort the handshake
428 if opaque PRF input is not successfully negotiated.
430 Arguments 'peerinput' and 'len' given to the callback function
431 will always be NULL and 0 in the case of a client. A server will
432 see the client's opaque PRF input through these variables if
433 available (NULL and 0 otherwise). Note that if the server
434 provides an opaque PRF input, the length must be the same as the
435 length of the client's opaque PRF input.
437 Note that the callback function will only be called when creating
438 a new session (session resumption can resume whatever was
439 previously negotiated), and will not be called in SSL 2.0
440 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
441 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
442 for applications that need to enforce opaque PRF input.
446 *) Update ssl code to support digests other than SHA1+MD5 for handshake
449 [Victor B. Wagner <vitus@cryptocom.ru>]
451 *) Add RFC4507 support to OpenSSL. This includes the corrections in
452 RFC4507bis. The encrypted ticket format is an encrypted encoded
453 SSL_SESSION structure, that way new session features are automatically
456 If a client application caches session in an SSL_SESSION structure
457 support is transparent because tickets are now stored in the encoded
460 The SSL_CTX structure automatically generates keys for ticket
461 protection in servers so again support should be possible
462 with no application modification.
464 If a client or server wishes to disable RFC4507 support then the option
465 SSL_OP_NO_TICKET can be set.
467 Add a TLS extension debugging callback to allow the contents of any client
468 or server extensions to be examined.
470 This work was sponsored by Google.
473 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
474 OpenSSL should now compile cleanly on gcc 4.2
475 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
477 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
478 support including streaming MAC support: this is required for GOST
480 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
482 *) Add option -stream to use PKCS#7 streaming in smime utility. New
483 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
484 to output in BER and PEM format.
487 *) Experimental support for use of HMAC via EVP_PKEY interface. This
488 allows HMAC to be handled via the EVP_DigestSign*() interface. The
489 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
490 ENGINE support for HMAC keys which are unextractable. New -mac and
491 -macopt options to dgst utility.
494 *) New option -sigopt to dgst utility. Update dgst to use
495 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
496 alternative signing paramaters such as X9.31 or PSS in the dgst
500 *) Change ssl_cipher_apply_rule(), the internal function that does
501 the work each time a ciphersuite string requests enabling
502 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
503 removing ("!foo+bar") a class of ciphersuites: Now it maintains
504 the order of disabled ciphersuites such that those ciphersuites
505 that most recently went from enabled to disabled not only stay
506 in order with respect to each other, but also have higher priority
507 than other disabled ciphersuites the next time ciphersuites are
510 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
511 the same ciphersuites as with "HIGH" alone, but in a specific
512 order where the PSK ciphersuites come first (since they are the
513 most recently disabled ciphersuites when "HIGH" is parsed).
515 Also, change ssl_create_cipher_list() (using this new
516 funcionality) such that between otherwise identical
517 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
521 *) Change ssl_create_cipher_list() so that it automatically
522 arranges the ciphersuites in reasonable order before starting
523 to process the rule string. Thus, the definition for "DEFAULT"
524 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
525 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
526 This makes it much easier to arrive at a reasonable default order
527 in applications for which anonymous ciphers are OK (meaning
528 that you can't actually use DEFAULT).
529 [Bodo Moeller; suggested by Victor Duchovni]
531 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
532 processing) into multiple integers instead of setting
533 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
534 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
535 (These masks as well as the individual bit definitions are hidden
536 away into the non-exported interface ssl/ssl_locl.h, so this
537 change to the definition of the SSL_CIPHER structure shouldn't
538 affect applications.) This give us more bits for each of these
539 categories, so there is no longer a need to coagulate AES128 and
540 AES256 into a single algorithm bit, and to coagulate Camellia128
541 and Camellia256 into a single algorithm bit, which has led to all
544 Thus, among other things, the kludge introduced in 0.9.7m and
545 0.9.8e for masking out AES256 independently of AES128 or masking
546 out Camellia256 independently of AES256 is not needed here in 0.9.9.
548 With the change, we also introduce new ciphersuite aliases that
549 so far were missing: "AES128", "AES256", "CAMELLIA128", and
553 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
554 Use the leftmost N bytes of the signature input if the input is
555 larger than the prime q (with N being the size in bytes of q).
558 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
559 it yet and it is largely untested.
562 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
565 *) Initial incomplete changes to avoid need for function casts in OpenSSL
566 some compilers (gcc 4.2 and later) reject their use. Safestack is
567 reimplemented. Update ASN1 to avoid use of legacy functions.
570 *) Win32/64 targets are linked with Winsock2.
573 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
574 to external functions. This can be used to increase CRL handling
575 efficiency especially when CRLs are very large by (for example) storing
576 the CRL revoked certificates in a database.
579 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
580 new CRLs added to a directory can be used. New command line option
581 -verify_return_error to s_client and s_server. This causes real errors
582 to be returned by the verify callback instead of carrying on no matter
583 what. This reflects the way a "real world" verify callback would behave.
586 *) GOST engine, supporting several GOST algorithms and public key formats.
587 Kindly donated by Cryptocom.
590 *) Partial support for Issuing Distribution Point CRL extension. CRLs
591 partitioned by DP are handled but no indirect CRL or reason partitioning
592 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
593 selected via a scoring technique which handles IDP and AKID in CRLs.
596 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
597 will ultimately be used for all verify operations: this will remove the
598 X509_STORE dependency on certificate verification and allow alternative
599 lookup methods. X509_STORE based implementations of these two callbacks.
602 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
603 Modify get_crl() to find a valid (unexpired) CRL if possible.
606 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
607 this would be called X509_CRL_cmp() but that name is already used by
608 a function that just compares CRL issuer names. Cache several CRL
609 extensions in X509_CRL structure and cache CRLDP in X509.
612 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
613 this maps equivalent X509_NAME structures into a consistent structure.
614 Name comparison can then be performed rapidly using memcmp().
617 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
621 *) Allow digests to supply their own micalg string for S/MIME type using
622 the ctrl EVP_MD_CTRL_MICALG.
625 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
626 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
627 ctrl. It can then customise the structure before and/or after signing
631 *) New function OBJ_add_sigid() to allow application defined signature OIDs
632 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
633 to free up any added signature OIDs.
636 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
637 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
638 digest and cipher tables. New options added to openssl utility:
639 list-message-digest-algorithms and list-cipher-algorithms.
642 *) Change the array representation of binary polynomials: the list
643 of degrees of non-zero coefficients is now terminated with -1.
644 Previously it was terminated with 0, which was also part of the
645 value; thus, the array representation was not applicable to
646 polynomials where t^0 has coefficient zero. This change makes
647 the array representation useful in a more general context.
650 *) Various modifications and fixes to SSL/TLS cipher string
651 handling. For ECC, the code now distinguishes between fixed ECDH
652 with RSA certificates on the one hand and with ECDSA certificates
653 on the other hand, since these are separate ciphersuites. The
654 unused code for Fortezza ciphersuites has been removed.
656 For consistency with EDH, ephemeral ECDH is now called "EECDH"
657 (not "ECDHE"). For consistency with the code for DH
658 certificates, use of ECDH certificates is now considered ECDH
659 authentication, not RSA or ECDSA authentication (the latter is
660 merely the CA's signing algorithm and not actively used in the
663 The temporary ciphersuite alias "ECCdraft" is no longer
664 available, and ECC ciphersuites are no longer excluded from "ALL"
665 and "DEFAULT". The following aliases now exist for RFC 4492
666 ciphersuites, most of these by analogy with the DH case:
668 kECDHr - ECDH cert, signed with RSA
669 kECDHe - ECDH cert, signed with ECDSA
670 kECDH - ECDH cert (signed with either RSA or ECDSA)
671 kEECDH - ephemeral ECDH
672 ECDH - ECDH cert or ephemeral ECDH
678 AECDH - anonymous ECDH
679 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
683 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
684 Use correct micalg parameters depending on digest(s) in signed message.
687 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
688 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
691 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
692 an engine to register a method. Add ENGINE lookups for methods and
693 functional reference processing.
696 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
697 EVP_{Sign,Verify}* which allow an application to customise the signature
701 *) New -resign option to smime utility. This adds one or more signers
702 to an existing PKCS#7 signedData structure. Also -md option to use an
703 alternative message digest algorithm for signing.
706 *) Tidy up PKCS#7 routines and add new functions to make it easier to
707 create PKCS7 structures containing multiple signers. Update smime
708 application to support multiple signers.
711 *) New -macalg option to pkcs12 utility to allow setting of an alternative
715 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
716 Reorganize PBE internals to lookup from a static table using NIDs,
717 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
718 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
719 PRF which will be automatically used with PBES2.
722 *) Replace the algorithm specific calls to generate keys in "req" with the
726 *) Update PKCS#7 enveloped data routines to use new API. This is now
727 supported by any public key method supporting the encrypt operation. A
728 ctrl is added to allow the public key algorithm to examine or modify
729 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
733 *) Add a ctrl to asn1 method to allow a public key algorithm to express
734 a default digest type to use. In most cases this will be SHA1 but some
735 algorithms (such as GOST) need to specify an alternative digest. The
736 return value indicates how strong the prefernce is 1 means optional and
737 2 is mandatory (that is it is the only supported type). Modify
738 ASN1_item_sign() to accept a NULL digest argument to indicate it should
739 use the default md. Update openssl utilities to use the default digest
740 type for signing if it is not explicitly indicated.
743 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
744 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
745 signing method from the key type. This effectively removes the link
746 between digests and public key types.
749 *) Add an OID cross reference table and utility functions. Its purpose is to
750 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
751 rsaEncryption. This will allow some of the algorithm specific hackery
752 needed to use the correct OID to be removed.
755 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
756 structures for PKCS7_sign(). They are now set up by the relevant public
760 *) Add provisional EC pkey method with support for ECDSA and ECDH.
763 *) Add support for key derivation (agreement) in the API, DH method and
767 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
768 public and private key formats. As a side effect these add additional
769 command line functionality not previously available: DSA signatures can be
770 generated and verified using pkeyutl and DH key support and generation in
775 [Oliver Tappe <zooey@hirschkaefer.de>]
777 *) New make target "install_html_docs" installs HTML renditions of the
779 [Oliver Tappe <zooey@hirschkaefer.de>]
781 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
782 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
783 support key and parameter generation and add initial key generation
784 functionality for RSA.
787 *) Add functions for main EVP_PKEY_method operations. The undocumented
788 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
789 EVP_PKEY_{encrypt,decrypt}_old.
792 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
793 key API, doesn't do much yet.
796 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
797 public key algorithms. New option to openssl utility:
798 "list-public-key-algorithms" to print out info.
801 *) Implement the Supported Elliptic Curves Extension for
802 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
805 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
806 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
809 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
810 utilities such as rsa, dsa, dsaparam etc except they process any key
814 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
815 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
816 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
820 *) Initial support for pluggable public key ASN1.
821 De-spaghettify the public key ASN1 handling. Move public and private
822 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
823 algorithm specific handling to a single module within the relevant
824 algorithm directory. Add functions to allow (near) opaque processing
825 of public and private key structures.
828 *) Implement the Supported Point Formats Extension for
829 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
832 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
833 for the psk identity [hint] and the psk callback functions to the
834 SSL_SESSION, SSL and SSL_CTX structure.
837 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
841 SSL_CTX_use_psk_identity_hint
842 SSL_get_psk_identity_hint
844 SSL_use_psk_identity_hint
846 [Mika Kousa and Pasi Eronen of Nokia Corporation]
848 *) Add RFC 3161 compliant time stamp request creation, response generation
849 and response verification functionality.
850 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
852 *) Add initial support for TLS extensions, specifically for the server_name
853 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
854 have new members for a host name. The SSL data structure has an
855 additional member SSL_CTX *initial_ctx so that new sessions can be
856 stored in that context to allow for session resumption, even after the
857 SSL has been switched to a new SSL_CTX in reaction to a client's
858 server_name extension.
860 New functions (subject to change):
863 SSL_get_servername_type()
866 New CTRL codes and macros (subject to change):
868 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
869 - SSL_CTX_set_tlsext_servername_callback()
870 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
871 - SSL_CTX_set_tlsext_servername_arg()
872 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
874 openssl s_client has a new '-servername ...' option.
876 openssl s_server has new options '-servername_host ...', '-cert2 ...',
877 '-key2 ...', '-servername_fatal' (subject to change). This allows
878 testing the HostName extension for a specific single host name ('-cert'
879 and '-key' remain fallbacks for handshakes without HostName
880 negotiation). If the unrecogninzed_name alert has to be sent, this by
881 default is a warning; it becomes fatal with the '-servername_fatal'
884 [Peter Sylvester, Remy Allais, Christophe Renou]
886 *) Whirlpool hash implementation is added.
889 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
890 bn(64,32). Because of instruction set limitations it doesn't have
891 any negative impact on performance. This was done mostly in order
892 to make it possible to share assembler modules, such as bn_mul_mont
893 implementations, between 32- and 64-bit builds without hassle.
896 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
897 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
901 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
902 dedicated Montgomery multiplication procedure, is introduced.
903 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
904 "64-bit" performance on certain 32-bit targets.
907 *) New option SSL_OP_NO_COMP to disable use of compression selectively
908 in SSL structures. New SSL ctrl to set maximum send fragment size.
909 Save memory by seeting the I/O buffer sizes dynamically instead of
910 using the maximum available value.
913 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
914 in addition to the text details.
917 *) Very, very preliminary EXPERIMENTAL support for printing of general
918 ASN1 structures. This currently produces rather ugly output and doesn't
919 handle several customised structures at all.
922 *) Integrated support for PVK file format and some related formats such
923 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
924 these in the 'rsa' and 'dsa' utilities.
927 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
930 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
931 place for the (very old) "NETSCAPE" format certificates which are now
932 handled using new ASN1 code equivalents.
935 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
936 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
937 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
940 *) Modify CRL distribution points extension code to print out previously
941 unsupported fields. Enhance extension setting code to allow setting of
945 *) Add print and set support for Issuing Distribution Point CRL extension.
948 *) Change 'Configure' script to enable Camellia by default.
951 Changes between 0.9.8n and 0.9.8o [xx XXX xxxx]
953 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
954 common in certificates and some applications which only call
955 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
958 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
960 *) When rejecting SSL/TLS records due to an incorrect version number, never
961 update s->server with a new major version number. As of
962 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
963 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
964 the previous behavior could result in a read attempt at NULL when
965 receiving specific incorrect SSL/TLS records once record payload
966 protection is active. (CVE-2010-####)
967 [Bodo Moeller, Adam Langley]
969 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
970 could be crashed if the relevant tables were not present (e.g. chrooted).
971 [Tomas Hoger <thoger@redhat.com>]
973 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
975 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
976 [Martin Olsson, Neel Mehta]
978 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
979 accommodate for stack sorting, always a write lock!).
982 *) On some versions of WIN32 Heap32Next is very slow. This can cause
983 excessive delays in the RAND_poll(): over a minute. As a workaround
984 include a time check in the inner Heap32Next loop too.
987 *) The code that handled flushing of data in SSL/TLS originally used the
988 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
989 the problem outlined in PR#1949. The fix suggested there however can
990 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
991 of Apache). So instead simplify the code to flush unconditionally.
992 This should be fine since flushing with no data to flush is a no op.
995 *) Handle TLS versions 2.0 and later properly and correctly use the
996 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
997 off ancient servers have a habit of sticking around for a while...
1000 *) Modify compression code so it frees up structures without using the
1001 ex_data callbacks. This works around a problem where some applications
1002 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1003 restarting) then use compression (e.g. SSL with compression) later.
1004 This results in significant per-connection memory leaks and
1005 has caused some security issues including CVE-2008-1678 and
1009 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1010 change when encrypting or decrypting.
1013 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1014 connect and renegotiate with servers which do not support RI.
1015 Until RI is more widely deployed this option is enabled by default.
1018 *) Add "missing" ssl ctrls to clear options and mode.
1021 *) If client attempts to renegotiate and doesn't support RI respond with
1022 a no_renegotiation alert as required by RFC5746. Some renegotiating
1023 TLS clients will continue a connection gracefully when they receive
1024 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1025 waiting for a server hello which it will never receive. Now we treat a
1026 received no_renegotiation alert as a fatal error. This is because
1027 applications requesting a renegotiation might well expect it to succeed
1028 and would have no code in place to handle the server denying it so the
1029 only safe thing to do is to terminate the connection.
1032 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1033 peer supports secure renegotiation and 0 otherwise. Print out peer
1034 renegotiation support in s_client/s_server.
1037 *) Replace the highly broken and deprecated SPKAC certification method with
1038 the updated NID creation version. This should correctly handle UTF8.
1041 *) Implement RFC5746. Re-enable renegotiation but require the extension
1042 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1043 turns out to be a bad idea. It has been replaced by
1044 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1045 SSL_CTX_set_options(). This is really not recommended unless you
1046 know what you are doing.
1047 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1049 *) Fixes to stateless session resumption handling. Use initial_ctx when
1050 issuing and attempting to decrypt tickets in case it has changed during
1051 servername handling. Use a non-zero length session ID when attempting
1052 stateless session resumption: this makes it possible to determine if
1053 a resumption has occurred immediately after receiving server hello
1054 (several places in OpenSSL subtly assume this) instead of later in
1058 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1059 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1060 fixes for a few places where the return code is not checked
1062 [Julia Lawall <julia@diku.dk>]
1064 *) Add --strict-warnings option to Configure script to include devteam
1065 warnings in other configurations.
1068 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1069 makes it possible to install openssl libraries in locations which
1070 have names other than "lib", for example "/usr/lib64" which some
1072 [Steve Henson, based on patch from Jeremy Utley]
1074 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1075 X690 8.9.12 and can produce some misleading textual output of OIDs.
1076 [Steve Henson, reported by Dan Kaminsky]
1078 *) Delete MD2 from algorithm tables. This follows the recommendation in
1079 several standards that it is not used in new applications due to
1080 several cryptographic weaknesses. For binary compatibility reasons
1081 the MD2 API is still compiled in by default.
1084 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1088 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1089 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1091 [Guenter <lists@gknw.net>]
1093 *) Fix the server certificate chain building code to use X509_verify_cert(),
1094 it used to have an ad-hoc builder which was unable to cope with anything
1095 other than a simple chain.
1096 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1098 *) Don't check self signed certificate signatures in X509_verify_cert()
1099 by default (a flag can override this): it just wastes time without
1100 adding any security. As a useful side effect self signed root CAs
1101 with non-FIPS digests are now usable in FIPS mode.
1104 *) In dtls1_process_out_of_seq_message() the check if the current message
1105 is already buffered was missing. For every new message was memory
1106 allocated, allowing an attacker to perform an denial of service attack
1107 with sending out of seq handshake messages until there is no memory
1108 left. Additionally every future messege was buffered, even if the
1109 sequence number made no sense and would be part of another handshake.
1110 So only messages with sequence numbers less than 10 in advance will be
1111 buffered. (CVE-2009-1378)
1112 [Robin Seggelmann, discovered by Daniel Mentz]
1114 *) Records are buffered if they arrive with a future epoch to be
1115 processed after finishing the corresponding handshake. There is
1116 currently no limitation to this buffer allowing an attacker to perform
1117 a DOS attack with sending records with future epochs until there is no
1118 memory left. This patch adds the pqueue_size() function to detemine
1119 the size of a buffer and limits the record buffer to 100 entries.
1121 [Robin Seggelmann, discovered by Daniel Mentz]
1123 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1124 parent structure is freed. (CVE-2009-1379)
1127 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1128 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1131 [Ilya O. <vrghost@gmail.com>]
1133 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1135 *) Disable renegotiation completely - this fixes a severe security
1136 problem (CVE-2009-3555) at the cost of breaking all
1137 renegotiation. Renegotiation can be re-enabled by setting
1138 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1139 run-time. This is really not recommended unless you know what
1143 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1145 *) Don't set val to NULL when freeing up structures, it is freed up by
1146 underlying code. If sizeof(void *) > sizeof(long) this can result in
1147 zeroing past the valid field. (CVE-2009-0789)
1148 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1150 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1151 checked correctly. This would allow some invalid signed attributes to
1152 appear to verify correctly. (CVE-2009-0591)
1153 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1155 *) Reject UniversalString and BMPString types with invalid lengths. This
1156 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1157 a legal length. (CVE-2009-0590)
1160 *) Set S/MIME signing as the default purpose rather than setting it
1161 unconditionally. This allows applications to override it at the store
1165 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1166 to handle some structures.
1169 *) Improve efficiency of mem_gets: don't search whole buffer each time
1171 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1173 *) New -hex option for openssl rand.
1176 *) Print out UTF8String and NumericString when parsing ASN1.
1179 *) Support NumericString type for name components.
1182 *) Allow CC in the environment to override the automatically chosen
1183 compiler. Note that nothing is done to ensure flags work with the
1187 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1189 *) Properly check EVP_VerifyFinal() and similar return values
1191 [Ben Laurie, Bodo Moeller, Google Security Team]
1193 *) Enable TLS extensions by default.
1196 *) Allow the CHIL engine to be loaded, whether the application is
1197 multithreaded or not. (This does not release the developer from the
1198 obligation to set up the dynamic locking callbacks.)
1199 [Sander Temme <sander@temme.net>]
1201 *) Use correct exit code if there is an error in dgst command.
1202 [Steve Henson; problem pointed out by Roland Dirlewanger]
1204 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1205 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1208 *) Add experimental JPAKE support, including demo authentication in
1209 s_client and s_server.
1212 *) Set the comparison function in v3_addr_canonize().
1213 [Rob Austein <sra@hactrn.net>]
1215 *) Add support for XMPP STARTTLS in s_client.
1216 [Philip Paeps <philip@freebsd.org>]
1218 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1219 to ensure that even with this option, only ciphersuites in the
1220 server's preference list will be accepted. (Note that the option
1221 applies only when resuming a session, so the earlier behavior was
1222 just about the algorithm choice for symmetric cryptography.)
1225 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1227 *) Fix NULL pointer dereference if a DTLS server received
1228 ChangeCipherSpec as first record (CVE-2009-1386).
1231 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1232 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1235 *) The fix in 0.9.8c that supposedly got rid of unsafe
1236 double-checked locking was incomplete for RSA blinding,
1237 addressing just one layer of what turns out to have been
1238 doubly unsafe triple-checked locking.
1240 So now fix this for real by retiring the MONT_HELPER macro
1241 in crypto/rsa/rsa_eay.c.
1243 [Bodo Moeller; problem pointed out by Marius Schilder]
1245 *) Various precautionary measures:
1247 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1249 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1250 (NB: This would require knowledge of the secret session ticket key
1251 to exploit, in which case you'd be SOL either way.)
1253 - Change bn_nist.c so that it will properly handle input BIGNUMs
1254 outside the expected range.
1256 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1259 [Neel Mehta, Bodo Moeller]
1261 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1262 the load fails. Useful for distros.
1263 [Ben Laurie and the FreeBSD team]
1265 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1268 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1271 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1273 This work was sponsored by Logica.
1276 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1277 keystores. Support for SSL/TLS client authentication too.
1278 Not compiled unless enable-capieng specified to Configure.
1280 This work was sponsored by Logica.
1283 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1284 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1285 attribute creation routines such as certifcate requests and PKCS#12
1289 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1291 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1292 handshake which could lead to a cilent crash as found using the
1293 Codenomicon TLS test suite (CVE-2008-1672)
1294 [Steve Henson, Mark Cox]
1296 *) Fix double free in TLS server name extensions which could lead to
1297 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1300 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1302 Clear the error queue to ensure that error entries left from
1303 older function calls do not interfere with the correct operation.
1304 [Lutz Jaenicke, Erik de Castro Lopo]
1306 *) Remove root CA certificates of commercial CAs:
1308 The OpenSSL project does not recommend any specific CA and does not
1309 have any policy with respect to including or excluding any CA.
1310 Therefore it does not make any sense to ship an arbitrary selection
1311 of root CA certificates with the OpenSSL software.
1314 *) RSA OAEP patches to fix two separate invalid memory reads.
1315 The first one involves inputs when 'lzero' is greater than
1316 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1317 before the beginning of from). The second one involves inputs where
1318 the 'db' section contains nothing but zeroes (there is a one-byte
1319 invalid read after the end of 'db').
1320 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1322 *) Partial backport from 0.9.9-dev:
1324 Introduce bn_mul_mont (dedicated Montgomery multiplication
1325 procedure) as a candidate for BIGNUM assembler implementation.
1326 While 0.9.9-dev uses assembler for various architectures, only
1327 x86_64 is available by default here in the 0.9.8 branch, and
1328 32-bit x86 is available through a compile-time setting.
1330 To try the 32-bit x86 assembler implementation, use Configure
1331 option "enable-montasm" (which exists only for this backport).
1333 As "enable-montasm" for 32-bit x86 disclaims code stability
1334 anyway, in this constellation we activate additional code
1335 backported from 0.9.9-dev for further performance improvements,
1336 namely BN_from_montgomery_word. (To enable this otherwise,
1337 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1339 [Andy Polyakov (backport partially by Bodo Moeller)]
1341 *) Add TLS session ticket callback. This allows an application to set
1342 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1343 values. This is useful for key rollover for example where several key
1344 sets may exist with different names.
1347 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1348 This was broken until now in 0.9.8 releases, such that the only way
1349 a registered ENGINE could be used (assuming it initialises
1350 successfully on the host) was to explicitly set it as the default
1351 for the relevant algorithms. This is in contradiction with 0.9.7
1352 behaviour and the documentation. With this fix, when an ENGINE is
1353 registered into a given algorithm's table of implementations, the
1354 'uptodate' flag is reset so that auto-discovery will be used next
1355 time a new context for that algorithm attempts to select an
1357 [Ian Lister (tweaked by Geoff Thorpe)]
1359 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1360 implemention in the following ways:
1362 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1365 Lack of BER streaming support means one pass streaming processing is
1366 only supported if data is detached: setting the streaming flag is
1367 ignored for embedded content.
1369 CMS support is disabled by default and must be explicitly enabled
1370 with the enable-cms configuration option.
1373 *) Update the GMP engine glue to do direct copies between BIGNUM and
1374 mpz_t when openssl and GMP use the same limb size. Otherwise the
1375 existing "conversion via a text string export" trick is still used.
1376 [Paul Sheer <paulsheer@gmail.com>]
1378 *) Zlib compression BIO. This is a filter BIO which compressed and
1379 uncompresses any data passed through it.
1382 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1383 RFC3394 compatible AES key wrapping.
1386 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1387 sets string data without copying. X509_ALGOR_set0() and
1388 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1389 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1390 from an X509_ATTRIBUTE structure optionally checking it occurs only
1391 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1395 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1396 to get the expected BN_FLG_CONSTTIME behavior.
1397 [Bodo Moeller (Google)]
1401 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1402 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1403 - added some more tests to do_tests.pl
1404 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1405 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1406 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1407 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1408 - various changes to netware.pl to enable gcc-cross builds on Win32
1410 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1411 - various changes to fix missing prototype warnings
1412 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1413 - added AES, WHIRLPOOL and CPUID assembler code to build files
1414 - added missing AES assembler make rules to mk1mf.pl
1415 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1416 [Guenter Knauf <eflash@gmx.net>]
1418 *) Implement certificate status request TLS extension defined in RFC3546.
1419 A client can set the appropriate parameters and receive the encoded
1420 OCSP response via a callback. A server can query the supplied parameters
1421 and set the encoded OCSP response in the callback. Add simplified examples
1422 to s_client and s_server.
1425 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1427 *) Fix various bugs:
1428 + Binary incompatibility of ssl_ctx_st structure
1429 + DTLS interoperation with non-compliant servers
1430 + Don't call get_session_cb() without proposed session
1431 + Fix ia64 assembler code
1432 [Andy Polyakov, Steve Henson]
1434 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1436 *) DTLS Handshake overhaul. There were longstanding issues with
1437 OpenSSL DTLS implementation, which were making it impossible for
1438 RFC 4347 compliant client to communicate with OpenSSL server.
1439 Unfortunately just fixing these incompatibilities would "cut off"
1440 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1441 server keeps tolerating non RFC compliant syntax. The opposite is
1442 not true, 0.9.8f client can not communicate with earlier server.
1443 This update even addresses CVE-2007-4995.
1446 *) Changes to avoid need for function casts in OpenSSL: some compilers
1447 (gcc 4.2 and later) reject their use.
1448 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1451 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1452 RFC4507bis. The encrypted ticket format is an encrypted encoded
1453 SSL_SESSION structure, that way new session features are automatically
1456 If a client application caches session in an SSL_SESSION structure
1457 support is transparent because tickets are now stored in the encoded
1460 The SSL_CTX structure automatically generates keys for ticket
1461 protection in servers so again support should be possible
1462 with no application modification.
1464 If a client or server wishes to disable RFC4507 support then the option
1465 SSL_OP_NO_TICKET can be set.
1467 Add a TLS extension debugging callback to allow the contents of any client
1468 or server extensions to be examined.
1470 This work was sponsored by Google.
1473 *) Add initial support for TLS extensions, specifically for the server_name
1474 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1475 have new members for a host name. The SSL data structure has an
1476 additional member SSL_CTX *initial_ctx so that new sessions can be
1477 stored in that context to allow for session resumption, even after the
1478 SSL has been switched to a new SSL_CTX in reaction to a client's
1479 server_name extension.
1481 New functions (subject to change):
1483 SSL_get_servername()
1484 SSL_get_servername_type()
1487 New CTRL codes and macros (subject to change):
1489 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1490 - SSL_CTX_set_tlsext_servername_callback()
1491 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1492 - SSL_CTX_set_tlsext_servername_arg()
1493 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1495 openssl s_client has a new '-servername ...' option.
1497 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1498 '-key2 ...', '-servername_fatal' (subject to change). This allows
1499 testing the HostName extension for a specific single host name ('-cert'
1500 and '-key' remain fallbacks for handshakes without HostName
1501 negotiation). If the unrecogninzed_name alert has to be sent, this by
1502 default is a warning; it becomes fatal with the '-servername_fatal'
1505 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1507 *) Add AES and SSE2 assembly language support to VC++ build.
1510 *) Mitigate attack on final subtraction in Montgomery reduction.
1513 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1514 (which previously caused an internal error).
1517 *) Squeeze another 10% out of IGE mode when in != out.
1520 *) AES IGE mode speedup.
1521 [Dean Gaudet (Google)]
1523 *) Add the Korean symmetric 128-bit cipher SEED (see
1524 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1525 add SEED ciphersuites from RFC 4162:
1527 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1528 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1529 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1530 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1532 To minimize changes between patchlevels in the OpenSSL 0.9.8
1533 series, SEED remains excluded from compilation unless OpenSSL
1534 is configured with 'enable-seed'.
1535 [KISA, Bodo Moeller]
1537 *) Mitigate branch prediction attacks, which can be practical if a
1538 single processor is shared, allowing a spy process to extract
1539 information. For detailed background information, see
1540 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1541 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1542 and Necessary Software Countermeasures"). The core of the change
1543 are new versions BN_div_no_branch() and
1544 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1545 respectively, which are slower, but avoid the security-relevant
1546 conditional branches. These are automatically called by BN_div()
1547 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1548 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1549 remove a conditional branch.
1551 BN_FLG_CONSTTIME is the new name for the previous
1552 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1553 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1554 in the exponent causes BN_mod_exp_mont() to use the alternative
1555 implementation in BN_mod_exp_mont_consttime().) The old name
1556 remains as a deprecated alias.
1558 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1559 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1560 constant-time implementations for more than just exponentiation.
1561 Here too the old name is kept as a deprecated alias.
1563 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1564 the BN_BLINDING structure gets an independent copy of the
1565 modulus. This means that the previous "BIGNUM *m" argument to
1566 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1567 essentially becomes "const BIGNUM *m", although we can't actually
1568 change this in the header file before 0.9.9. It allows
1569 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1570 enable BN_FLG_CONSTTIME.
1572 [Matthew D Wood (Intel Corp)]
1574 *) In the SSL/TLS server implementation, be strict about session ID
1575 context matching (which matters if an application uses a single
1576 external cache for different purposes). Previously,
1577 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1578 set. This did ensure strict client verification, but meant that,
1579 with applications using a single external cache for quite
1580 different requirements, clients could circumvent ciphersuite
1581 restrictions for a given session ID context by starting a session
1582 in a different context.
1585 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1586 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1587 authentication-only ciphersuites.
1590 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1591 not complete and could lead to a possible single byte overflow
1592 (CVE-2007-5135) [Ben Laurie]
1594 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1596 *) Since AES128 and AES256 (and similarly Camellia128 and
1597 Camellia256) share a single mask bit in the logic of
1598 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1599 kludge to work properly if AES128 is available and AES256 isn't
1600 (or if Camellia128 is available and Camellia256 isn't).
1603 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1604 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1605 When a point or a seed is encoded in a BIT STRING, we need to
1606 prevent the removal of trailing zero bits to get the proper DER
1607 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1608 of a NamedBitList, for which trailing 0 bits need to be removed.)
1611 *) Have SSL/TLS server implementation tolerate "mismatched" record
1612 protocol version while receiving ClientHello even if the
1613 ClientHello is fragmented. (The server can't insist on the
1614 particular protocol version it has chosen before the ServerHello
1615 message has informed the client about his choice.)
1618 *) Add RFC 3779 support.
1619 [Rob Austein for ARIN, Ben Laurie]
1621 *) Load error codes if they are not already present instead of using a
1622 static variable. This allows them to be cleanly unloaded and reloaded.
1623 Improve header file function name parsing.
1626 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1627 or CAPABILITY handshake as required by RFCs.
1630 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1632 *) Introduce limits to prevent malicious keys being able to
1633 cause a denial of service. (CVE-2006-2940)
1634 [Steve Henson, Bodo Moeller]
1636 *) Fix ASN.1 parsing of certain invalid structures that can result
1637 in a denial of service. (CVE-2006-2937) [Steve Henson]
1639 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1640 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1642 *) Fix SSL client code which could crash if connecting to a
1643 malicious SSLv2 server. (CVE-2006-4343)
1644 [Tavis Ormandy and Will Drewry, Google Security Team]
1646 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1647 match only those. Before that, "AES256-SHA" would be interpreted
1648 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1649 the same strength classification in 0.9.7h) as we currently only
1650 have a single AES bit in the ciphersuite description bitmap.
1651 That change, however, also applied to ciphersuite strings such as
1652 "RC4-MD5" that intentionally matched multiple ciphersuites --
1653 namely, SSL 2.0 ciphersuites in addition to the more common ones
1654 from SSL 3.0/TLS 1.0.
1656 So we change the selection algorithm again: Naming an explicit
1657 ciphersuite selects this one ciphersuite, and any other similar
1658 ciphersuite (same bitmap) from *other* protocol versions.
1659 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1660 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1662 Since SSL 2.0 does not have any ciphersuites for which the
1663 128/256 bit distinction would be relevant, this works for now.
1664 The proper fix will be to use different bits for AES128 and
1665 AES256, which would have avoided the problems from the beginning;
1666 however, bits are scarce, so we can only do this in a new release
1667 (not just a patchlevel) when we can change the SSL_CIPHER
1668 definition to split the single 'unsigned long mask' bitmap into
1669 multiple values to extend the available space.
1673 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1675 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1676 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1678 *) Add AES IGE and biIGE modes.
1681 *) Change the Unix randomness entropy gathering to use poll() when
1682 possible instead of select(), since the latter has some
1683 undesirable limitations.
1684 [Darryl Miles via Richard Levitte and Bodo Moeller]
1686 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1687 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1688 cannot be implicitly activated as part of, e.g., the "AES" alias.
1689 However, please upgrade to OpenSSL 0.9.9[-dev] for
1690 non-experimental use of the ECC ciphersuites to get TLS extension
1691 support, which is required for curve and point format negotiation
1692 to avoid potential handshake problems.
1695 *) Disable rogue ciphersuites:
1697 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1698 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1699 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1701 The latter two were purportedly from
1702 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1705 Also deactivate the remaining ciphersuites from
1706 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1707 unofficial, and the ID has long expired.
1710 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1711 dual-core machines) and other potential thread-safety issues.
1714 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1715 versions), which is now available for royalty-free use
1716 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1717 Also, add Camellia TLS ciphersuites from RFC 4132.
1719 To minimize changes between patchlevels in the OpenSSL 0.9.8
1720 series, Camellia remains excluded from compilation unless OpenSSL
1721 is configured with 'enable-camellia'.
1724 *) Disable the padding bug check when compression is in use. The padding
1725 bug check assumes the first packet is of even length, this is not
1726 necessarily true if compresssion is enabled and can result in false
1727 positives causing handshake failure. The actual bug test is ancient
1728 code so it is hoped that implementations will either have fixed it by
1729 now or any which still have the bug do not support compression.
1732 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1734 *) When applying a cipher rule check to see if string match is an explicit
1735 cipher suite and only match that one cipher suite if it is.
1738 *) Link in manifests for VC++ if needed.
1739 [Austin Ziegler <halostatue@gmail.com>]
1741 *) Update support for ECC-based TLS ciphersuites according to
1742 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1743 TLS extensions, which are supported starting with the 0.9.9
1744 branch, not in the OpenSSL 0.9.8 branch).
1747 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1748 opaque EVP_CIPHER_CTX handling.
1751 *) Fixes and enhancements to zlib compression code. We now only use
1752 "zlib1.dll" and use the default __cdecl calling convention on Win32
1753 to conform with the standards mentioned here:
1754 http://www.zlib.net/DLL_FAQ.txt
1755 Static zlib linking now works on Windows and the new --with-zlib-include
1756 --with-zlib-lib options to Configure can be used to supply the location
1757 of the headers and library. Gracefully handle case where zlib library
1761 *) Several fixes and enhancements to the OID generation code. The old code
1762 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1763 handle numbers larger than ULONG_MAX, truncated printing and had a
1764 non standard OBJ_obj2txt() behaviour.
1767 *) Add support for building of engines under engine/ as shared libraries
1768 under VC++ build system.
1771 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1772 Hopefully, we will not see any false combination of paths any more.
1775 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1777 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1778 (part of SSL_OP_ALL). This option used to disable the
1779 countermeasure against man-in-the-middle protocol-version
1780 rollback in the SSL 2.0 server implementation, which is a bad
1781 idea. (CVE-2005-2969)
1783 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1784 for Information Security, National Institute of Advanced Industrial
1785 Science and Technology [AIST], Japan)]
1787 *) Add two function to clear and return the verify parameter flags.
1790 *) Keep cipherlists sorted in the source instead of sorting them at
1791 runtime, thus removing the need for a lock.
1794 *) Avoid some small subgroup attacks in Diffie-Hellman.
1795 [Nick Mathewson and Ben Laurie]
1797 *) Add functions for well-known primes.
1800 *) Extended Windows CE support.
1801 [Satoshi Nakamura and Andy Polyakov]
1803 *) Initialize SSL_METHOD structures at compile time instead of during
1804 runtime, thus removing the need for a lock.
1807 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1808 attempting to decrypt each encrypted key in turn. Add support to
1812 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1814 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1817 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1820 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1821 key into the same file any more.
1824 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1827 *) Add -utf8 command line and config file option to 'ca'.
1828 [Stefan <stf@udoma.org]
1830 *) Removed the macro des_crypt(), as it seems to conflict with some
1831 libraries. Use DES_crypt().
1834 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1835 involves renaming the source and generated shared-libs for
1836 both. The engines will accept the corrected or legacy ids
1837 ('ncipher' and '4758_cca' respectively) when binding. NB,
1838 this only applies when building 'shared'.
1839 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1841 *) Add attribute functions to EVP_PKEY structure. Modify
1842 PKCS12_create() to recognize a CSP name attribute and
1843 use it. Make -CSP option work again in pkcs12 utility.
1846 *) Add new functionality to the bn blinding code:
1847 - automatic re-creation of the BN_BLINDING parameters after
1848 a fixed number of uses (currently 32)
1849 - add new function for parameter creation
1850 - introduce flags to control the update behaviour of the
1851 BN_BLINDING parameters
1852 - hide BN_BLINDING structure
1853 Add a second BN_BLINDING slot to the RSA structure to improve
1854 performance when a single RSA object is shared among several
1858 *) Add support for DTLS.
1859 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1861 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1862 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1865 *) Remove buggy and incompletet DH cert support from
1866 ssl/ssl_rsa.c and ssl/s3_both.c
1869 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1870 the apps/openssl applications.
1873 *) Compile clean with "-Wall -Wmissing-prototypes
1874 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1875 DEBUG_SAFESTACK must also be set.
1878 *) Change ./Configure so that certain algorithms can be disabled by default.
1879 The new counterpiece to "no-xxx" is "enable-xxx".
1881 The patented RC5 and MDC2 algorithms will now be disabled unless
1882 "enable-rc5" and "enable-mdc2", respectively, are specified.
1884 (IDEA remains enabled despite being patented. This is because IDEA
1885 is frequently required for interoperability, and there is no license
1886 fee for non-commercial use. As before, "no-idea" can be used to
1887 avoid this algorithm.)
1891 *) Add processing of proxy certificates (see RFC 3820). This work was
1892 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1893 EGEE (Enabling Grids for E-science in Europe).
1896 *) RC4 performance overhaul on modern architectures/implementations, such
1897 as Intel P4, IA-64 and AMD64.
1900 *) New utility extract-section.pl. This can be used specify an alternative
1901 section number in a pod file instead of having to treat each file as
1902 a separate case in Makefile. This can be done by adding two lines to the
1905 =for comment openssl_section:XXX
1907 The blank line is mandatory.
1911 *) New arguments -certform, -keyform and -pass for s_client and s_server
1912 to allow alternative format key and certificate files and passphrase
1916 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1917 update associated structures and add various utility functions.
1919 Add new policy related verify parameters, include policy checking in
1920 standard verify code. Enhance 'smime' application with extra parameters
1921 to support policy checking and print out.
1924 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1925 Nehemiah processors. These extensions support AES encryption in hardware
1926 as well as RNG (though RNG support is currently disabled).
1927 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1929 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1932 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1933 [Andy Polyakov and a number of other people]
1935 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1936 implementation contributed by IBM.
1937 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1939 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1940 exponent rather than 'unsigned long'. There is a corresponding change to
1941 the new 'rsa_keygen' element of the RSA_METHOD structure.
1942 [Jelte Jansen, Geoff Thorpe]
1944 *) Functionality for creating the initial serial number file is now
1945 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1947 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1948 number file to 1, which is bound to cause problems. To avoid
1949 the problems while respecting compatibility between different 0.9.7
1950 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1951 CA.pl for serial number initialization. With the new release 0.9.8,
1952 we can fix the problem directly in the 'ca' utility.)
1955 *) Reduced header interdepencies by declaring more opaque objects in
1956 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1957 give fewer recursive includes, which could break lazy source code - so
1958 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1959 developers should define this symbol when building and using openssl to
1960 ensure they track the recommended behaviour, interfaces, [etc], but
1961 backwards-compatible behaviour prevails when this isn't defined.
1964 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1967 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1968 This will generate a random key of the appropriate length based on the
1969 cipher context. The EVP_CIPHER can provide its own random key generation
1970 routine to support keys of a specific form. This is used in the des and
1971 3des routines to generate a key of the correct parity. Update S/MIME
1972 code to use new functions and hence generate correct parity DES keys.
1973 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1974 valid (weak or incorrect parity).
1977 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1978 as looking them up. This is useful when the verified structure may contain
1979 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1980 present unless the new PKCS7_NO_CRL flag is asserted.
1983 *) Extend ASN1 oid configuration module. It now additionally accepts the
1986 shortName = some long name, 1.2.3.4
1989 *) Reimplemented the BN_CTX implementation. There is now no more static
1990 limitation on the number of variables it can handle nor the depth of the
1991 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1992 information can now expand as required, and rather than having a single
1993 static array of bignums, BN_CTX now uses a linked-list of such arrays
1994 allowing it to expand on demand whilst maintaining the usefulness of
1995 BN_CTX's "bundling".
1998 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1999 to allow all RSA operations to function using a single BN_CTX.
2002 *) Preliminary support for certificate policy evaluation and checking. This
2003 is initially intended to pass the tests outlined in "Conformance Testing
2004 of Relying Party Client Certificate Path Processing Logic" v1.07.
2007 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2008 remained unused and not that useful. A variety of other little bignum
2009 tweaks and fixes have also been made continuing on from the audit (see
2013 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2014 associated ASN1, EVP and SSL functions and old ASN1 macros.
2017 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2018 and this should never fail. So the return value from the use of
2019 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2020 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2023 *) BN_CTX_get() should return zero-valued bignums, providing the same
2024 initialised value as BN_new().
2025 [Geoff Thorpe, suggested by Ulf Möller]
2027 *) Support for inhibitAnyPolicy certificate extension.
2030 *) An audit of the BIGNUM code is underway, for which debugging code is
2031 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2032 is considered valid when processing BIGNUMs, and causes execution to
2033 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2034 further steps are taken to deliberately pollute unused data in BIGNUM
2035 structures to try and expose faulty code further on. For now, openssl will
2036 (in its default mode of operation) continue to tolerate the inconsistent
2037 forms that it has tolerated in the past, but authors and packagers should
2038 consider trying openssl and their own applications when compiled with
2039 these debugging symbols defined. It will help highlight potential bugs in
2040 their own code, and will improve the test coverage for OpenSSL itself. At
2041 some point, these tighter rules will become openssl's default to improve
2042 maintainability, though the assert()s and other overheads will remain only
2043 in debugging configurations. See bn.h for more details.
2044 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2046 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2047 that can only be obtained through BN_CTX_new() (which implicitly
2048 initialises it). The presence of this function only made it possible
2049 to overwrite an existing structure (and cause memory leaks).
2052 *) Because of the callback-based approach for implementing LHASH as a
2053 template type, lh_insert() adds opaque objects to hash-tables and
2054 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2055 to clean up those corresponding objects before destroying the hash table
2056 (and losing the object pointers). So some over-zealous constifications in
2057 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2058 objects as "const" and the lh_doall[_arg] callback wrappers are not
2059 prototyped to have "const" restrictions on the object pointers they are
2060 given (and so aren't required to cast them away any more).
2063 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2064 (speed) prefers to use its own implementation. The two implementations
2065 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2066 its object type properly exposed (MS_TM) instead of casting to/from "char
2067 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2068 aren't necessarily the greatest nomenclatures - but this is what was used
2069 internally to the implementation so I've used that for now.
2072 *) Ensure that deprecated functions do not get compiled when
2073 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2074 the self-tests were still using deprecated key-generation functions so
2075 these have been updated also.
2078 *) Reorganise PKCS#7 code to separate the digest location functionality
2079 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2080 New function PKCS7_set_digest() to set the digest type for PKCS#7
2081 digestedData type. Add additional code to correctly generate the
2082 digestedData type and add support for this type in PKCS7 initialization
2086 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2087 structure of type "other".
2090 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2091 sure the loop does correctly stop and breaking ("division by zero")
2092 modulus operations are not performed. The (pre-generated) prime
2093 table crypto/bn/bn_prime.h was already correct, but it could not be
2094 re-generated on some platforms because of the "division by zero"
2095 situation in the script.
2096 [Ralf S. Engelschall]
2098 *) Update support for ECC-based TLS ciphersuites according to
2099 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2100 SHA-1 now is only used for "small" curves (where the
2101 representation of a field element takes up to 24 bytes); for
2102 larger curves, the field element resulting from ECDH is directly
2103 used as premaster secret.
2104 [Douglas Stebila (Sun Microsystems Laboratories)]
2106 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2107 curve secp160r1 to the tests.
2108 [Douglas Stebila (Sun Microsystems Laboratories)]
2110 *) Add the possibility to load symbols globally with DSO.
2111 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2113 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2114 control of the error stack.
2117 *) Add support for STORE in ENGINE.
2120 *) Add the STORE type. The intention is to provide a common interface
2121 to certificate and key stores, be they simple file-based stores, or
2122 HSM-type store, or LDAP stores, or...
2123 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2126 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2127 pass a list of arguments to any function as well as provide a way
2128 for a function to pass data back to the caller.
2131 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2132 works like BUF_strdup() but can be used to duplicate a portion of
2133 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2137 *) Add the function sk_find_ex() which works like sk_find(), but will
2138 return an index to an element even if an exact match couldn't be
2139 found. The index is guaranteed to point at the element where the
2140 searched-for key would be inserted to preserve sorting order.
2143 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2144 takes an extra flags argument for optional functionality. Currently,
2145 the following flags are defined:
2147 OBJ_BSEARCH_VALUE_ON_NOMATCH
2148 This one gets OBJ_bsearch_ex() to return a pointer to the first
2149 element where the comparing function returns a negative or zero
2152 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2153 This one gets OBJ_bsearch_ex() to return a pointer to the first
2154 element where the comparing function returns zero. This is useful
2155 if there are more than one element where the comparing function
2159 *) Make it possible to create self-signed certificates with 'openssl ca'
2160 in such a way that the self-signed certificate becomes part of the
2161 CA database and uses the same mechanisms for serial number generation
2162 as all other certificate signing. The new flag '-selfsign' enables
2163 this functionality. Adapt CA.sh and CA.pl.in.
2166 *) Add functionality to check the public key of a certificate request
2167 against a given private. This is useful to check that a certificate
2168 request can be signed by that key (self-signing).
2171 *) Make it possible to have multiple active certificates with the same
2172 subject in the CA index file. This is done only if the keyword
2173 'unique_subject' is set to 'no' in the main CA section (default
2174 if 'CA_default') of the configuration file. The value is saved
2175 with the database itself in a separate index attribute file,
2176 named like the index file with '.attr' appended to the name.
2179 *) Generate muti valued AVAs using '+' notation in config files for
2183 *) Support for nameConstraints certificate extension.
2186 *) Support for policyConstraints certificate extension.
2189 *) Support for policyMappings certificate extension.
2192 *) Make sure the default DSA_METHOD implementation only uses its
2193 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2194 and change its own handlers to be NULL so as to remove unnecessary
2195 indirection. This lets alternative implementations fallback to the
2196 default implementation more easily.
2199 *) Support for directoryName in GeneralName related extensions
2203 *) Make it possible to link applications using Makefile.shared.
2204 Make that possible even when linking against static libraries!
2207 *) Support for single pass processing for S/MIME signing. This now
2208 means that S/MIME signing can be done from a pipe, in addition
2209 cleartext signing (multipart/signed type) is effectively streaming
2210 and the signed data does not need to be all held in memory.
2212 This is done with a new flag PKCS7_STREAM. When this flag is set
2213 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2214 is done after the data is output (and digests calculated) in
2215 SMIME_write_PKCS7().
2218 *) Add full support for -rpath/-R, both in shared libraries and
2219 applications, at least on the platforms where it's known how
2223 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2224 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2225 will now compute a table of multiples of the generator that
2226 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2227 faster (notably in the case of a single point multiplication,
2228 scalar * generator).
2229 [Nils Larsch, Bodo Moeller]
2231 *) IPv6 support for certificate extensions. The various extensions
2232 which use the IP:a.b.c.d can now take IPv6 addresses using the
2233 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2237 *) Added an ENGINE that implements RSA by performing private key
2238 exponentiations with the GMP library. The conversions to and from
2239 GMP's mpz_t format aren't optimised nor are any montgomery forms
2240 cached, and on x86 it appears OpenSSL's own performance has caught up.
2241 However there are likely to be other architectures where GMP could
2242 provide a boost. This ENGINE is not built in by default, but it can be
2243 specified at Configure time and should be accompanied by the necessary
2244 linker additions, eg;
2245 ./config -DOPENSSL_USE_GMP -lgmp
2248 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2249 testing availability of engines with "-t" - the old behaviour is
2250 produced by increasing the feature's verbosity with "-tt".
2253 *) ECDSA routines: under certain error conditions uninitialized BN objects
2254 could be freed. Solution: make sure initialization is performed early
2255 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2259 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2260 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2261 software implementations. For DSA and DH, parameter generation can
2262 also be overriden by providing the appropriate method callbacks.
2265 *) Change the "progress" mechanism used in key-generation and
2266 primality testing to functions that take a new BN_GENCB pointer in
2267 place of callback/argument pairs. The new API functions have "_ex"
2268 postfixes and the older functions are reimplemented as wrappers for
2269 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2270 declarations of the old functions to help (graceful) attempts to
2271 migrate to the new functions. Also, the new key-generation API
2272 functions operate on a caller-supplied key-structure and return
2273 success/failure rather than returning a key or NULL - this is to
2274 help make "keygen" another member function of RSA_METHOD etc.
2276 Example for using the new callback interface:
2278 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2282 BN_GENCB_set(&my_cb, my_callback, my_arg);
2284 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2285 /* For the meaning of a, b in calls to my_callback(), see the
2286 * documentation of the function that calls the callback.
2287 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2288 * my_callback should return 1 if it wants BN_is_prime_ex()
2289 * to continue, or 0 to stop.
2294 *) Change the ZLIB compression method to be stateful, and make it
2295 available to TLS with the number defined in
2296 draft-ietf-tls-compression-04.txt.
2299 *) Add the ASN.1 structures and functions for CertificatePair, which
2300 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2302 CertificatePair ::= SEQUENCE {
2303 forward [0] Certificate OPTIONAL,
2304 reverse [1] Certificate OPTIONAL,
2305 -- at least one of the pair shall be present -- }
2307 Also implement the PEM functions to read and write certificate
2308 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2310 This needed to be defined, mostly for the sake of the LDAP
2311 attribute crossCertificatePair, but may prove useful elsewhere as
2315 *) Make it possible to inhibit symlinking of shared libraries in
2316 Makefile.shared, for Cygwin's sake.
2319 *) Extend the BIGNUM API by creating a function
2320 void BN_set_negative(BIGNUM *a, int neg);
2321 and a macro that behave like
2322 int BN_is_negative(const BIGNUM *a);
2324 to avoid the need to access 'a->neg' directly in applications.
2327 *) Implement fast modular reduction for pseudo-Mersenne primes
2328 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2329 EC_GROUP_new_curve_GFp() will now automatically use this
2331 [Nils Larsch <nla@trustcenter.de>]
2333 *) Add new lock type (CRYPTO_LOCK_BN).
2336 *) Change the ENGINE framework to automatically load engines
2337 dynamically from specific directories unless they could be
2338 found to already be built in or loaded. Move all the
2339 current engines except for the cryptodev one to a new
2341 The engines in engines/ are built as shared libraries if
2342 the "shared" options was given to ./Configure or ./config.
2343 Otherwise, they are inserted in libcrypto.a.
2344 /usr/local/ssl/engines is the default directory for dynamic
2345 engines, but that can be overriden at configure time through
2346 the usual use of --prefix and/or --openssldir, and at run
2347 time with the environment variable OPENSSL_ENGINES.
2348 [Geoff Thorpe and Richard Levitte]
2350 *) Add Makefile.shared, a helper makefile to build shared
2351 libraries. Addapt Makefile.org.
2354 *) Add version info to Win32 DLLs.
2355 [Peter 'Luna' Runestig" <peter@runestig.com>]
2357 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2358 can be added using this API to created arbitrary PKCS#12
2359 files while avoiding the low level API.
2361 New options to PKCS12_create(), key or cert can be NULL and
2362 will then be omitted from the output file. The encryption
2363 algorithm NIDs can be set to -1 for no encryption, the mac
2364 iteration count can be set to 0 to omit the mac.
2366 Enhance pkcs12 utility by making the -nokeys and -nocerts
2367 options work when creating a PKCS#12 file. New option -nomac
2368 to omit the mac, NONE can be set for an encryption algorithm.
2369 New code is modified to use the enhanced PKCS12_create()
2370 instead of the low level API.
2373 *) Extend ASN1 encoder to support indefinite length constructed
2374 encoding. This can output sequences tags and octet strings in
2375 this form. Modify pk7_asn1.c to support indefinite length
2376 encoding. This is experimental and needs additional code to
2377 be useful, such as an ASN1 bio and some enhanced streaming
2380 Extend template encode functionality so that tagging is passed
2381 down to the template encoder.
2384 *) Let 'openssl req' fail if an argument to '-newkey' is not
2385 recognized instead of using RSA as a default.
2388 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2389 As these are not official, they are not included in "ALL";
2390 the "ECCdraft" ciphersuite group alias can be used to select them.
2391 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2393 *) Add ECDH engine support.
2394 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2396 *) Add ECDH in new directory crypto/ecdh/.
2397 [Douglas Stebila (Sun Microsystems Laboratories)]
2399 *) Let BN_rand_range() abort with an error after 100 iterations
2400 without success (which indicates a broken PRNG).
2403 *) Change BN_mod_sqrt() so that it verifies that the input value
2404 is really the square of the return value. (Previously,
2405 BN_mod_sqrt would show GIGO behaviour.)
2408 *) Add named elliptic curves over binary fields from X9.62, SECG,
2409 and WAP/WTLS; add OIDs that were still missing.
2411 [Sheueling Chang Shantz and Douglas Stebila
2412 (Sun Microsystems Laboratories)]
2414 *) Extend the EC library for elliptic curves over binary fields
2415 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2418 EC_GF2m_simple_method
2422 EC_GROUP_new_curve_GF2m
2423 EC_GROUP_set_curve_GF2m
2424 EC_GROUP_get_curve_GF2m
2425 EC_POINT_set_affine_coordinates_GF2m
2426 EC_POINT_get_affine_coordinates_GF2m
2427 EC_POINT_set_compressed_coordinates_GF2m
2429 Point compression for binary fields is disabled by default for
2430 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2433 As binary polynomials are represented as BIGNUMs, various members
2434 of the EC_GROUP and EC_POINT data structures can be shared
2435 between the implementations for prime fields and binary fields;
2436 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2437 are essentially identical to their ..._GFp counterparts.
2438 (For simplicity, the '..._GFp' prefix has been dropped from
2439 various internal method names.)
2441 An internal 'field_div' method (similar to 'field_mul' and
2442 'field_sqr') has been added; this is used only for binary fields.
2444 [Sheueling Chang Shantz and Douglas Stebila
2445 (Sun Microsystems Laboratories)]
2447 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2448 through methods ('mul', 'precompute_mult').
2450 The generic implementations (now internally called 'ec_wNAF_mul'
2451 and 'ec_wNAF_precomputed_mult') remain the default if these
2452 methods are undefined.
2454 [Sheueling Chang Shantz and Douglas Stebila
2455 (Sun Microsystems Laboratories)]
2457 *) New function EC_GROUP_get_degree, which is defined through
2458 EC_METHOD. For curves over prime fields, this returns the bit
2459 length of the modulus.
2461 [Sheueling Chang Shantz and Douglas Stebila
2462 (Sun Microsystems Laboratories)]
2464 *) New functions EC_GROUP_dup, EC_POINT_dup.
2465 (These simply call ..._new and ..._copy).
2467 [Sheueling Chang Shantz and Douglas Stebila
2468 (Sun Microsystems Laboratories)]
2470 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2471 Polynomials are represented as BIGNUMs (where the sign bit is not
2472 used) in the following functions [macros]:
2475 BN_GF2m_sub [= BN_GF2m_add]
2476 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2477 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2478 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2480 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2481 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2482 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2483 BN_GF2m_cmp [= BN_ucmp]
2485 (Note that only the 'mod' functions are actually for fields GF(2^m).
2486 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2488 For some functions, an the irreducible polynomial defining a
2489 field can be given as an 'unsigned int[]' with strictly
2490 decreasing elements giving the indices of those bits that are set;
2491 i.e., p[] represents the polynomial
2492 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2494 p[0] > p[1] > ... > p[k] = 0.
2495 This applies to the following functions:
2500 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2501 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2503 BN_GF2m_mod_sqrt_arr
2504 BN_GF2m_mod_solve_quad_arr
2508 Conversion can be performed by the following functions:
2513 bntest.c has additional tests for binary polynomial arithmetic.
2515 Two implementations for BN_GF2m_mod_div() are available.
2516 The default algorithm simply uses BN_GF2m_mod_inv() and
2517 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2518 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2519 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2521 [Sheueling Chang Shantz and Douglas Stebila
2522 (Sun Microsystems Laboratories)]
2524 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2525 functionality is disabled at compile-time.
2526 [Douglas Stebila <douglas.stebila@sun.com>]
2528 *) Change default behaviour of 'openssl asn1parse' so that more
2529 information is visible when viewing, e.g., a certificate:
2531 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2532 mode the content of non-printable OCTET STRINGs is output in a
2533 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2534 avoid the appearance of a printable string.
2535 [Nils Larsch <nla@trustcenter.de>]
2537 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2539 EC_GROUP_set_asn1_flag()
2540 EC_GROUP_get_asn1_flag()
2541 EC_GROUP_set_point_conversion_form()
2542 EC_GROUP_get_point_conversion_form()
2543 These control ASN1 encoding details:
2544 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2545 has been set to OPENSSL_EC_NAMED_CURVE.
2546 - Points are encoded in uncompressed form by default; options for
2547 asn1_for are as for point2oct, namely
2548 POINT_CONVERSION_COMPRESSED
2549 POINT_CONVERSION_UNCOMPRESSED
2550 POINT_CONVERSION_HYBRID
2552 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2555 EC_GROUP_get0_seed()
2556 EC_GROUP_get_seed_len()
2557 This is used only for ASN1 purposes (so far).
2558 [Nils Larsch <nla@trustcenter.de>]
2560 *) Add 'field_type' member to EC_METHOD, which holds the NID
2561 of the appropriate field type OID. The new function
2562 EC_METHOD_get_field_type() returns this value.
2563 [Nils Larsch <nla@trustcenter.de>]
2568 EC_POINT_point2hex()
2569 EC_POINT_hex2point()
2570 providing useful interfaces to EC_POINT_point2oct() and
2571 EC_POINT_oct2point().
2572 [Nils Larsch <nla@trustcenter.de>]
2574 *) Change internals of the EC library so that the functions
2575 EC_GROUP_set_generator()
2576 EC_GROUP_get_generator()
2577 EC_GROUP_get_order()
2578 EC_GROUP_get_cofactor()
2579 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2580 to methods, which would lead to unnecessary code duplication when
2581 adding different types of curves.
2582 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2584 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2585 arithmetic, and such that modified wNAFs are generated
2586 (which avoid length expansion in many cases).
2589 *) Add a function EC_GROUP_check_discriminant() (defined via
2590 EC_METHOD) that verifies that the curve discriminant is non-zero.
2592 Add a function EC_GROUP_check() that makes some sanity tests
2593 on a EC_GROUP, its generator and order. This includes
2594 EC_GROUP_check_discriminant().
2595 [Nils Larsch <nla@trustcenter.de>]
2597 *) Add ECDSA in new directory crypto/ecdsa/.
2599 Add applications 'openssl ecparam' and 'openssl ecdsa'
2600 (these are based on 'openssl dsaparam' and 'openssl dsa').
2602 ECDSA support is also included in various other files across the
2603 library. Most notably,
2604 - 'openssl req' now has a '-newkey ecdsa:file' option;
2605 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2606 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2607 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2608 them suitable for ECDSA where domain parameters must be
2609 extracted before the specific public key;
2610 - ECDSA engine support has been added.
2611 [Nils Larsch <nla@trustcenter.de>]
2613 *) Include some named elliptic curves, and add OIDs from X9.62,
2614 SECG, and WAP/WTLS. Each curve can be obtained from the new
2616 EC_GROUP_new_by_curve_name(),
2617 and the list of available named curves can be obtained with
2618 EC_get_builtin_curves().
2619 Also add a 'curve_name' member to EC_GROUP objects, which can be
2621 EC_GROUP_set_curve_name()
2622 EC_GROUP_get_curve_name()
2623 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2625 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2626 was actually never needed) and in BN_mul(). The removal in BN_mul()
2627 required a small change in bn_mul_part_recursive() and the addition
2628 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2629 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2630 bn_sub_words() and bn_add_words() except they take arrays with
2634 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2636 *) Cleanse PEM buffers before freeing them since they may contain
2638 [Benjamin Bennett <ben@psc.edu>]
2640 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2641 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2642 authentication-only ciphersuites.
2645 *) Since AES128 and AES256 share a single mask bit in the logic of
2646 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2647 kludge to work properly if AES128 is available and AES256 isn't.
2650 *) Expand security boundary to match 1.1.1 module.
2653 *) Remove redundant features: hash file source, editing of test vectors
2654 modify fipsld to use external fips_premain.c signature.
2657 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2658 run algorithm test programs.
2661 *) Make algorithm test programs more tolerant of whitespace.
2664 *) Have SSL/TLS server implementation tolerate "mismatched" record
2665 protocol version while receiving ClientHello even if the
2666 ClientHello is fragmented. (The server can't insist on the
2667 particular protocol version it has chosen before the ServerHello
2668 message has informed the client about his choice.)
2671 *) Load error codes if they are not already present instead of using a
2672 static variable. This allows them to be cleanly unloaded and reloaded.
2675 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2677 *) Introduce limits to prevent malicious keys being able to
2678 cause a denial of service. (CVE-2006-2940)
2679 [Steve Henson, Bodo Moeller]
2681 *) Fix ASN.1 parsing of certain invalid structures that can result
2682 in a denial of service. (CVE-2006-2937) [Steve Henson]
2684 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2685 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2687 *) Fix SSL client code which could crash if connecting to a
2688 malicious SSLv2 server. (CVE-2006-4343)
2689 [Tavis Ormandy and Will Drewry, Google Security Team]
2691 *) Change ciphersuite string processing so that an explicit
2692 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2693 will no longer include "AES128-SHA"), and any other similar
2694 ciphersuite (same bitmap) from *other* protocol versions (so that
2695 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2696 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2697 changes from 0.9.8b and 0.9.8d.
2700 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2702 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2703 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2705 *) Change the Unix randomness entropy gathering to use poll() when
2706 possible instead of select(), since the latter has some
2707 undesirable limitations.
2708 [Darryl Miles via Richard Levitte and Bodo Moeller]
2710 *) Disable rogue ciphersuites:
2712 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2713 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2714 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2716 The latter two were purportedly from
2717 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2720 Also deactive the remaining ciphersuites from
2721 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2722 unofficial, and the ID has long expired.
2725 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2726 dual-core machines) and other potential thread-safety issues.
2729 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2731 *) Adapt fipsld and the build system to link against the validated FIPS
2732 module in FIPS mode.
2735 *) Fixes for VC++ 2005 build under Windows.
2738 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2739 from a Windows bash shell such as MSYS. It is autodetected from the
2740 "config" script when run from a VC++ environment. Modify standard VC++
2741 build to use fipscanister.o from the GNU make build.
2744 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2746 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2747 The value now differs depending on if you build for FIPS or not.
2748 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2749 safely run with a non-FIPSed libcrypto, as it may crash because of
2750 the difference induced by this change.
2753 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2755 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2756 (part of SSL_OP_ALL). This option used to disable the
2757 countermeasure against man-in-the-middle protocol-version
2758 rollback in the SSL 2.0 server implementation, which is a bad
2759 idea. (CVE-2005-2969)
2761 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2762 for Information Security, National Institute of Advanced Industrial
2763 Science and Technology [AIST], Japan)]
2765 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2766 mainly for FIPS compliance and not fully integrated at this stage.
2769 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2770 the exponentiation using a fixed-length exponent. (Otherwise,
2771 the information leaked through timing could expose the secret key
2772 after many signatures; cf. Bleichenbacher's attack on DSA with
2776 *) Make a new fixed-window mod_exp implementation the default for
2777 RSA, DSA, and DH private-key operations so that the sequence of
2778 squares and multiplies and the memory access pattern are
2779 independent of the particular secret key. This will mitigate
2780 cache-timing and potential related attacks.
2782 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2783 and this is automatically used by BN_mod_exp_mont() if the new flag
2784 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2785 will use this BN flag for private exponents unless the flag
2786 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2787 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2789 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2791 *) Change the client implementation for SSLv23_method() and
2792 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2793 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2794 (Previously, the SSL 2.0 backwards compatible Client Hello
2795 message format would be used even with SSL_OP_NO_SSLv2.)
2798 *) Add support for smime-type MIME parameter in S/MIME messages which some
2802 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2803 a threadsafe manner. Modify rsa code to use new function and add calls
2804 to dsa and dh code (which had race conditions before).
2807 *) Include the fixed error library code in the C error file definitions
2808 instead of fixing them up at runtime. This keeps the error code
2809 structures constant.
2812 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2814 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2817 *) Fixes for newer kerberos headers. NB: the casts are needed because
2818 the 'length' field is signed on one version and unsigned on another
2819 with no (?) obvious way to tell the difference, without these VC++
2820 complains. Also the "definition" of FAR (blank) is no longer included
2821 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2822 some needed definitions.
2825 *) Undo Cygwin change.
2828 *) Added support for proxy certificates according to RFC 3820.
2829 Because they may be a security thread to unaware applications,
2830 they must be explicitely allowed in run-time. See
2831 docs/HOWTO/proxy_certificates.txt for further information.
2834 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2836 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2837 server and client random values. Previously
2838 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2839 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2841 This change has negligible security impact because:
2843 1. Server and client random values still have 24 bytes of pseudo random
2846 2. Server and client random values are sent in the clear in the initial
2849 3. The master secret is derived using the premaster secret (48 bytes in
2850 size for static RSA ciphersuites) as well as client server and random
2853 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2856 [Stephen Henson, reported by UK NISCC]
2858 *) Use Windows randomness collection on Cygwin.
2861 *) Fix hang in EGD/PRNGD query when communication socket is closed
2862 prematurely by EGD/PRNGD.
2863 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2865 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2868 *) Back-port of selected performance improvements from development
2869 branch, as well as improved support for PowerPC platforms.
2872 *) Add lots of checks for memory allocation failure, error codes to indicate
2873 failure and freeing up memory if a failure occurs.
2874 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2876 *) Add new -passin argument to dgst.
2879 *) Perform some character comparisons of different types in X509_NAME_cmp:
2880 this is needed for some certificates that reencode DNs into UTF8Strings
2881 (in violation of RFC3280) and can't or wont issue name rollover
2885 *) Make an explicit check during certificate validation to see that
2886 the CA setting in each certificate on the chain is correct. As a
2887 side effect always do the following basic checks on extensions,
2888 not just when there's an associated purpose to the check:
2890 - if there is an unhandled critical extension (unless the user
2891 has chosen to ignore this fault)
2892 - if the path length has been exceeded (if one is set at all)
2893 - that certain extensions fit the associated purpose (if one has
2897 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2899 *) Avoid a race condition when CRLs are checked in a multi threaded
2900 environment. This would happen due to the reordering of the revoked
2901 entries during signature checking and serial number lookup. Now the
2902 encoding is cached and the serial number sort performed under a lock.
2903 Add new STACK function sk_is_sorted().
2906 *) Add Delta CRL to the extension code.
2909 *) Various fixes to s3_pkt.c so alerts are sent properly.
2910 [David Holmes <d.holmes@f5.com>]
2912 *) Reduce the chances of duplicate issuer name and serial numbers (in
2913 violation of RFC3280) using the OpenSSL certificate creation utilities.
2914 This is done by creating a random 64 bit value for the initial serial
2915 number when a serial number file is created or when a self signed
2916 certificate is created using 'openssl req -x509'. The initial serial
2917 number file is created using 'openssl x509 -next_serial' in CA.pl
2918 rather than being initialized to 1.
2921 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2923 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2924 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2925 [Joe Orton, Steve Henson]
2927 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2929 [Joe Orton, Steve Henson]
2931 *) Make it possible to have multiple active certificates with the same
2932 subject in the CA index file. This is done only if the keyword
2933 'unique_subject' is set to 'no' in the main CA section (default
2934 if 'CA_default') of the configuration file. The value is saved
2935 with the database itself in a separate index attribute file,
2936 named like the index file with '.attr' appended to the name.
2939 *) X509 verify fixes. Disable broken certificate workarounds when
2940 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2941 keyUsage extension present. Don't accept CRLs with unhandled critical
2942 extensions: since verify currently doesn't process CRL extensions this
2943 rejects a CRL with *any* critical extensions. Add new verify error codes
2947 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2948 A clarification of RFC2560 will require the use of OCTET STRINGs and
2949 some implementations cannot handle the current raw format. Since OpenSSL
2950 copies and compares OCSP nonces as opaque blobs without any attempt at
2951 parsing them this should not create any compatibility issues.
2954 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2955 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2956 this HMAC (and other) operations are several times slower than OpenSSL
2960 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2961 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2963 *) Use the correct content when signing type "other".
2966 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2968 *) Fix various bugs revealed by running the NISCC test suite:
2970 Stop out of bounds reads in the ASN1 code when presented with
2971 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2973 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2975 If verify callback ignores invalid public key errors don't try to check
2976 certificate signature with the NULL public key.
2980 *) New -ignore_err option in ocsp application to stop the server
2981 exiting on the first error in a request.
2984 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2985 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2989 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2990 extra data after the compression methods not only for TLS 1.0
2991 but also for SSL 3.0 (as required by the specification).
2992 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2994 *) Change X509_certificate_type() to mark the key as exported/exportable
2995 when it's 512 *bits* long, not 512 bytes.
2998 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2999 blocks during encryption.
3002 *) Various fixes to base64 BIO and non blocking I/O. On write
3003 flushes were not handled properly if the BIO retried. On read
3004 data was not being buffered properly and had various logic bugs.
3005 This also affects blocking I/O when the data being decoded is a
3009 *) Various S/MIME bugfixes and compatibility changes:
3010 output correct application/pkcs7 MIME type if
3011 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3012 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3013 of files as .eml work). Correctly handle very long lines in MIME
3017 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3019 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3020 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3021 a protocol version number mismatch like a decryption error
3022 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3025 *) Turn on RSA blinding by default in the default implementation
3026 to avoid a timing attack. Applications that don't want it can call
3027 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3028 They would be ill-advised to do so in most cases.
3029 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3031 *) Change RSA blinding code so that it works when the PRNG is not
3032 seeded (in this case, the secret RSA exponent is abused as
3033 an unpredictable seed -- if it is not unpredictable, there
3034 is no point in blinding anyway). Make RSA blinding thread-safe
3035 by remembering the creator's thread ID in rsa->blinding and
3036 having all other threads use local one-time blinding factors
3037 (this requires more computation than sharing rsa->blinding, but
3038 avoids excessive locking; and if an RSA object is not shared
3039 between threads, blinding will still be very fast).
3042 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3043 ENGINE as defaults for all supported algorithms irrespective of
3044 the 'flags' parameter. 'flags' is now honoured, so applications
3045 should make sure they are passing it correctly.
3048 *) Target "mingw" now allows native Windows code to be generated in
3049 the Cygwin environment as well as with the MinGW compiler.
3052 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3054 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3055 via timing by performing a MAC computation even if incorrrect
3056 block cipher padding has been found. This is a countermeasure
3057 against active attacks where the attacker has to distinguish
3058 between bad padding and a MAC verification error. (CVE-2003-0078)
3060 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3061 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3062 Martin Vuagnoux (EPFL, Ilion)]
3064 *) Make the no-err option work as intended. The intention with no-err
3065 is not to have the whole error stack handling routines removed from
3066 libcrypto, it's only intended to remove all the function name and
3067 reason texts, thereby removing some of the footprint that may not
3068 be interesting if those errors aren't displayed anyway.
3070 NOTE: it's still possible for any application or module to have it's
3071 own set of error texts inserted. The routines are there, just not
3072 used by default when no-err is given.
3075 *) Add support for FreeBSD on IA64.
3076 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3078 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3079 Kerberos function mit_des_cbc_cksum(). Before this change,
3080 the value returned by DES_cbc_cksum() was like the one from
3081 mit_des_cbc_cksum(), except the bytes were swapped.
3082 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3084 *) Allow an application to disable the automatic SSL chain building.
3085 Before this a rather primitive chain build was always performed in
3086 ssl3_output_cert_chain(): an application had no way to send the
3087 correct chain if the automatic operation produced an incorrect result.
3089 Now the chain builder is disabled if either:
3091 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3093 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3095 The reasoning behind this is that an application would not want the
3096 auto chain building to take place if extra chain certificates are
3097 present and it might also want a means of sending no additional
3098 certificates (for example the chain has two certificates and the
3102 *) Add the possibility to build without the ENGINE framework.
3103 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3105 *) Under Win32 gmtime() can return NULL: check return value in
3106 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3109 *) DSA routines: under certain error conditions uninitialized BN objects
3110 could be freed. Solution: make sure initialization is performed early
3111 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3112 Nils Larsch <nla@trustcenter.de> via PR#459)
3115 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3116 checked on reconnect on the client side, therefore session resumption
3117 could still fail with a "ssl session id is different" error. This
3118 behaviour is masked when SSL_OP_ALL is used due to
3119 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3120 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3121 followup to PR #377.
3124 *) IA-32 assembler support enhancements: unified ELF targets, support
3125 for SCO/Caldera platforms, fix for Cygwin shared build.
3128 *) Add support for FreeBSD on sparc64. As a consequence, support for
3129 FreeBSD on non-x86 processors is separate from x86 processors on
3130 the config script, much like the NetBSD support.
3131 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3133 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3135 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3138 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3139 code (06) was taken as the first octet of the session ID and the last
3140 octet was ignored consequently. As a result SSLv2 client side session
3141 caching could not have worked due to the session ID mismatch between
3143 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3147 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3148 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3152 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3153 seems that in spite of existing for more than a year, many application
3154 author have done nothing to provide the necessary callbacks, which
3155 means that this particular engine will not work properly anywhere.
3156 This is a very unfortunate situation which forces us, in the name
3157 of usability, to give the hw_ncipher.c a static lock, which is part
3159 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3160 appear in 0.9.8 or later. We EXPECT application authors to have
3161 dealt properly with this when 0.9.8 is released (unless we actually
3162 make such changes in the libcrypto locking code that changes will
3163 have to be made anyway).
3166 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3167 octets have been read, EOF or an error occurs. Without this change
3168 some truncated ASN1 structures will not produce an error.
3171 *) Disable Heimdal support, since it hasn't been fully implemented.
3172 Still give the possibility to force the use of Heimdal, but with
3173 warnings and a request that patches get sent to openssl-dev.
3176 *) Add the VC-CE target, introduce the WINCE sysname, and add
3177 INSTALL.WCE and appropriate conditionals to make it build.
3178 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3180 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3181 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3182 edit numbers of the version.
3183 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3185 *) Introduce safe string copy and catenation functions
3186 (BUF_strlcpy() and BUF_strlcat()).
3187 [Ben Laurie (CHATS) and Richard Levitte]
3189 *) Avoid using fixed-size buffers for one-line DNs.
3190 [Ben Laurie (CHATS)]
3192 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3193 resizing buffers containing secrets, and use where appropriate.
3194 [Ben Laurie (CHATS)]
3196 *) Avoid using fixed size buffers for configuration file location.
3197 [Ben Laurie (CHATS)]
3199 *) Avoid filename truncation for various CA files.
3200 [Ben Laurie (CHATS)]
3202 *) Use sizeof in preference to magic numbers.
3203 [Ben Laurie (CHATS)]
3205 *) Avoid filename truncation in cert requests.
3206 [Ben Laurie (CHATS)]
3208 *) Add assertions to check for (supposedly impossible) buffer
3210 [Ben Laurie (CHATS)]
3212 *) Don't cache truncated DNS entries in the local cache (this could
3213 potentially lead to a spoofing attack).
3214 [Ben Laurie (CHATS)]
3216 *) Fix various buffers to be large enough for hex/decimal
3217 representations in a platform independent manner.
3218 [Ben Laurie (CHATS)]
3220 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3221 resizing buffers containing secrets, and use where appropriate.
3222 [Ben Laurie (CHATS)]
3224 *) Add BIO_indent() to avoid much slightly worrying code to do
3226 [Ben Laurie (CHATS)]
3228 *) Convert sprintf()/BIO_puts() to BIO_printf().
3229 [Ben Laurie (CHATS)]
3231 *) buffer_gets() could terminate with the buffer only half
3233 [Ben Laurie (CHATS)]
3235 *) Add assertions to prevent user-supplied crypto functions from
3236 overflowing internal buffers by having large block sizes, etc.
3237 [Ben Laurie (CHATS)]
3239 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3241 [Ben Laurie (CHATS)]
3243 *) Eliminate unused copy of key in RC4.
3244 [Ben Laurie (CHATS)]
3246 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3247 [Ben Laurie (CHATS)]
3249 *) Fix off-by-one error in EGD path.
3250 [Ben Laurie (CHATS)]
3252 *) If RANDFILE path is too long, ignore instead of truncating.
3253 [Ben Laurie (CHATS)]
3255 *) Eliminate unused and incorrectly sized X.509 structure
3257 [Ben Laurie (CHATS)]
3259 *) Eliminate unused and dangerous function knumber().
3260 [Ben Laurie (CHATS)]
3262 *) Eliminate unused and dangerous structure, KSSL_ERR.
3263 [Ben Laurie (CHATS)]
3265 *) Protect against overlong session ID context length in an encoded
3266 session object. Since these are local, this does not appear to be
3268 [Ben Laurie (CHATS)]
3270 *) Change from security patch (see 0.9.6e below) that did not affect
3271 the 0.9.6 release series:
3273 Remote buffer overflow in SSL3 protocol - an attacker could
3274 supply an oversized master key in Kerberos-enabled versions.
3276 [Ben Laurie (CHATS)]
3278 *) Change the SSL kerb5 codes to match RFC 2712.
3281 *) Make -nameopt work fully for req and add -reqopt switch.
3282 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3284 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3285 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3287 *) Make sure tests can be performed even if the corresponding algorithms
3288 have been removed entirely. This was also the last step to make
3289 OpenSSL compilable with DJGPP under all reasonable conditions.
3290 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3292 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3293 to allow version independent disabling of normally unselected ciphers,
3294 which may be activated as a side-effect of selecting a single cipher.
3296 (E.g., cipher list string "RSA" enables ciphersuites that are left
3297 out of "ALL" because they do not provide symmetric encryption.
3298 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3299 [Lutz Jaenicke, Bodo Moeller]
3301 *) Add appropriate support for separate platform-dependent build
3302 directories. The recommended way to make a platform-dependent
3303 build directory is the following (tested on Linux), maybe with
3306 # Place yourself outside of the OpenSSL source tree. In
3307 # this example, the environment variable OPENSSL_SOURCE
3308 # is assumed to contain the absolute OpenSSL source directory.
3309 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3310 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3311 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3312 mkdir -p `dirname $F`
3313 ln -s $OPENSSL_SOURCE/$F $F
3316 To be absolutely sure not to disturb the source tree, a "make clean"
3317 is a good thing. If it isn't successfull, don't worry about it,
3318 it probably means the source directory is very clean.
3321 *) Make sure any ENGINE control commands make local copies of string
3322 pointers passed to them whenever necessary. Otherwise it is possible
3323 the caller may have overwritten (or deallocated) the original string
3324 data when a later ENGINE operation tries to use the stored values.
3325 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3327 *) Improve diagnostics in file reading and command-line digests.
3328 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3330 *) Add AES modes CFB and OFB to the object database. Correct an
3331 error in AES-CFB decryption.
3334 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3335 allows existing EVP_CIPHER_CTX structures to be reused after
3336 calling EVP_*Final(). This behaviour is used by encryption
3337 BIOs and some applications. This has the side effect that
3338 applications must explicitly clean up cipher contexts with
3339 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3342 *) Check the values of dna and dnb in bn_mul_recursive before calling
3343 bn_mul_comba (a non zero value means the a or b arrays do not contain
3344 n2 elements) and fallback to bn_mul_normal if either is not zero.
3347 *) Fix escaping of non-ASCII characters when using the -subj option
3348 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3351 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3352 form for "surname", serialNumber has no short form.
3353 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3354 therefore remove "mail" short name for "internet 7".
3355 The OID for unique identifiers in X509 certificates is
3356 x500UniqueIdentifier, not uniqueIdentifier.
3357 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3360 *) Add an "init" command to the ENGINE config module and auto initialize
3361 ENGINEs. Without any "init" command the ENGINE will be initialized
3362 after all ctrl commands have been executed on it. If init=1 the
3363 ENGINE is initailized at that point (ctrls before that point are run
3364 on the uninitialized ENGINE and after on the initialized one). If
3365 init=0 then the ENGINE will not be iniatialized at all.
3368 *) Fix the 'app_verify_callback' interface so that the user-defined
3369 argument is actually passed to the callback: In the
3370 SSL_CTX_set_cert_verify_callback() prototype, the callback
3371 declaration has been changed from
3374 int (*cb)(X509_STORE_CTX *,void *);
3375 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3376 i=s->ctx->app_verify_callback(&ctx)
3377 has been changed into
3378 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3380 To update applications using SSL_CTX_set_cert_verify_callback(),
3381 a dummy argument can be added to their callback functions.
3382 [D. K. Smetters <smetters@parc.xerox.com>]
3384 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3385 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3387 *) Add and OPENSSL_LOAD_CONF define which will cause
3388 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3389 This allows older applications to transparently support certain
3390 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3391 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3392 load the config file and OPENSSL_add_all_algorithms_conf() which will
3393 always load it have also been added.
3396 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3397 Adjust NIDs and EVP layer.
3398 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3400 *) Config modules support in openssl utility.
3402 Most commands now load modules from the config file,
3403 though in a few (such as version) this isn't done
3404 because it couldn't be used for anything.
3406 In the case of ca and req the config file used is
3407 the same as the utility itself: that is the -config
3408 command line option can be used to specify an
3412 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3413 use "openssl_conf" if filename is NULL use default openssl config file.
3416 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3417 config section name. Add a new flag to tolerate a missing config file
3418 and move code to CONF_modules_load_file().
3421 *) Support for crypto accelerator cards from Accelerated Encryption
3422 Processing, www.aep.ie. (Use engine 'aep')
3423 The support was copied from 0.9.6c [engine] and adapted/corrected
3424 to work with the new engine framework.
3425 [AEP Inc. and Richard Levitte]
3427 *) Support for SureWare crypto accelerator cards from Baltimore
3428 Technologies. (Use engine 'sureware')
3429 The support was copied from 0.9.6c [engine] and adapted
3430 to work with the new engine framework.
3433 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3434 make the newer ENGINE framework commands for the CHIL engine work.
3435 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3437 *) Make it possible to produce shared libraries on ReliantUNIX.
3438 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3440 *) Add the configuration target debug-linux-ppro.
3441 Make 'openssl rsa' use the general key loading routines
3442 implemented in apps.c, and make those routines able to
3443 handle the key format FORMAT_NETSCAPE and the variant
3445 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3447 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3448 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3450 *) Add -keyform to rsautl, and document -engine.
3451 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3453 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3454 BIO_R_NO_SUCH_FILE error code rather than the generic
3455 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3458 *) Add new functions
3460 ERR_peek_last_error_line
3461 ERR_peek_last_error_line_data.
3462 These are similar to
3465 ERR_peek_error_line_data,
3466 but report on the latest error recorded rather than the first one
3467 still in the error queue.
3468 [Ben Laurie, Bodo Moeller]
3470 *) default_algorithms option in ENGINE config module. This allows things
3472 default_algorithms = ALL
3473 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3476 *) Prelminary ENGINE config module.
3479 *) New experimental application configuration code.
3482 *) Change the AES code to follow the same name structure as all other
3483 symmetric ciphers, and behave the same way. Move everything to
3484 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3485 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3487 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3488 [Ben Laurie and Theo de Raadt]
3490 *) Add option to output public keys in req command.
3491 [Massimiliano Pala madwolf@openca.org]
3493 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3494 (up to about 10% better than before for P-192 and P-224).
3497 *) New functions/macros
3499 SSL_CTX_set_msg_callback(ctx, cb)
3500 SSL_CTX_set_msg_callback_arg(ctx, arg)
3501 SSL_set_msg_callback(ssl, cb)
3502 SSL_set_msg_callback_arg(ssl, arg)
3504 to request calling a callback function
3506 void cb(int write_p, int version, int content_type,
3507 const void *buf, size_t len, SSL *ssl, void *arg)
3509 whenever a protocol message has been completely received
3510 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3511 protocol version according to which the SSL library interprets
3512 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3513 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3514 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3515 specification (change_cipher_spec(20), alert(21), handshake(22)).
3516 'buf' and 'len' point to the actual message, 'ssl' to the
3517 SSL object, and 'arg' is the application-defined value set by
3518 SSL[_CTX]_set_msg_callback_arg().
3520 'openssl s_client' and 'openssl s_server' have new '-msg' options
3521 to enable a callback that displays all protocol messages.
3524 *) Change the shared library support so shared libraries are built as
3525 soon as the corresponding static library is finished, and thereby get
3526 openssl and the test programs linked against the shared library.
3527 This still only happens when the keyword "shard" has been given to
3528 the configuration scripts.
3530 NOTE: shared library support is still an experimental thing, and
3531 backward binary compatibility is still not guaranteed.
3532 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3534 *) Add support for Subject Information Access extension.
3535 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3537 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3538 additional bytes when new memory had to be allocated, not just
3539 when reusing an existing buffer.
3542 *) New command line and configuration option 'utf8' for the req command.
3543 This allows field values to be specified as UTF8 strings.
3546 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3547 runs for the former and machine-readable output for the latter.
3550 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3551 of the e-mail address in the DN (i.e., it will go into a certificate
3552 extension only). The new configuration file option 'email_in_dn = no'
3553 has the same effect.
3554 [Massimiliano Pala madwolf@openca.org]
3556 *) Change all functions with names starting with des_ to be starting
3557 with DES_ instead. Add wrappers that are compatible with libdes,
3558 but are named _ossl_old_des_*. Finally, add macros that map the
3559 des_* symbols to the corresponding _ossl_old_des_* if libdes
3560 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3561 desired, the des_* symbols will be mapped to DES_*, with one
3564 Since we provide two compatibility mappings, the user needs to
3565 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3566 compatibility is desired. The default (i.e., when that macro
3567 isn't defined) is OpenSSL 0.9.6c compatibility.
3569 There are also macros that enable and disable the support of old
3570 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3571 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3572 are defined, the default will apply: to support the old des routines.
3574 In either case, one must include openssl/des.h to get the correct
3575 definitions. Do not try to just include openssl/des_old.h, that
3578 NOTE: This is a major break of an old API into a new one. Software
3579 authors are encouraged to switch to the DES_ style functions. Some
3580 time in the future, des_old.h and the libdes compatibility functions
3581 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3582 default), and then completely removed.
3585 *) Test for certificates which contain unsupported critical extensions.
3586 If such a certificate is found during a verify operation it is
3587 rejected by default: this behaviour can be overridden by either
3588 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3589 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3590 X509_supported_extension() has also been added which returns 1 if a
3591 particular extension is supported.
3594 *) Modify the behaviour of EVP cipher functions in similar way to digests
3595 to retain compatibility with existing code.
3598 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3599 compatibility with existing code. In particular the 'ctx' parameter does
3600 not have to be to be initialized before the call to EVP_DigestInit() and
3601 it is tidied up after a call to EVP_DigestFinal(). New function
3602 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3603 EVP_MD_CTX_copy() changed to not require the destination to be
3604 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3605 requires the destination to be valid.
3607 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3608 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3611 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3612 so that complete 'Handshake' protocol structures are kept in memory
3613 instead of overwriting 'msg_type' and 'length' with 'body' data.
3616 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3617 [Massimo Santin via Richard Levitte]
3619 *) Major restructuring to the underlying ENGINE code. This includes
3620 reduction of linker bloat, separation of pure "ENGINE" manipulation
3621 (initialisation, etc) from functionality dealing with implementations
3622 of specific crypto iterfaces. This change also introduces integrated
3623 support for symmetric ciphers and digest implementations - so ENGINEs
3624 can now accelerate these by providing EVP_CIPHER and EVP_MD
3625 implementations of their own. This is detailed in crypto/engine/README
3626 as it couldn't be adequately described here. However, there are a few
3627 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3628 were changed in the original introduction of ENGINE code have now
3629 reverted back - the hooking from this code to ENGINE is now a good
3630 deal more passive and at run-time, operations deal directly with
3631 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3632 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3633 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3634 they were not being used by the framework as there is no concept of a
3635 BIGNUM_METHOD and they could not be generalised to the new
3636 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3637 ENGINE_cpy() has been removed as it cannot be consistently defined in
3641 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3644 *) Change mkdef.pl to sort symbols that get the same entry number,
3645 and make sure the automatically generated functions ERR_load_*
3646 become part of libeay.num as well.
3649 *) New function SSL_renegotiate_pending(). This returns true once
3650 renegotiation has been requested (either SSL_renegotiate() call
3651 or HelloRequest/ClientHello receveived from the peer) and becomes
3652 false once a handshake has been completed.
3653 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3654 sends a HelloRequest, but does not ensure that a handshake takes
3655 place. SSL_renegotiate_pending() is useful for checking if the
3656 client has followed the request.)
3659 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3660 By default, clients may request session resumption even during
3661 renegotiation (if session ID contexts permit); with this option,
3662 session resumption is possible only in the first handshake.
3664 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3665 more bits available for options that should not be part of
3666 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3669 *) Add some demos for certificate and certificate request creation.
3672 *) Make maximum certificate chain size accepted from the peer application
3673 settable (SSL*_get/set_max_cert_list()), as proposed by
3674 "Douglas E. Engert" <deengert@anl.gov>.
3677 *) Add support for shared libraries for Unixware-7
3678 (Boyd Lynn Gerber <gerberb@zenez.com>).
3681 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3682 be done prior to destruction. Use this to unload error strings from
3683 ENGINEs that load their own error strings. NB: This adds two new API
3684 functions to "get" and "set" this destroy handler in an ENGINE.
3687 *) Alter all existing ENGINE implementations (except "openssl" and
3688 "openbsd") to dynamically instantiate their own error strings. This
3689 makes them more flexible to be built both as statically-linked ENGINEs
3690 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3691 Also, add stub code to each that makes building them as self-contained
3692 shared-libraries easier (see README.ENGINE).
3695 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3696 implementations into applications that are completely implemented in
3697 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3698 commands that can be used to configure what shared-library to load and
3699 to control aspects of the way it is handled. Also, made an update to
3700 the README.ENGINE file that brings its information up-to-date and
3701 provides some information and instructions on the "dynamic" ENGINE
3702 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3705 *) Make it possible to unload ranges of ERR strings with a new
3706 "ERR_unload_strings" function.
3709 *) Add a copy() function to EVP_MD.
3712 *) Make EVP_MD routines take a context pointer instead of just the
3713 md_data void pointer.
3716 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3717 that the digest can only process a single chunk of data
3718 (typically because it is provided by a piece of
3719 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3720 is only going to provide a single chunk of data, and hence the
3721 framework needn't accumulate the data for oneshot drivers.
3724 *) As with "ERR", make it possible to replace the underlying "ex_data"
3725 functions. This change also alters the storage and management of global
3726 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3727 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3728 index counters. The API functions that use this state have been changed
3729 to take a "class_index" rather than pointers to the class's local STACK
3730 and counter, and there is now an API function to dynamically create new
3731 classes. This centralisation allows us to (a) plug a lot of the
3732 thread-safety problems that existed, and (b) makes it possible to clean
3733 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3734 such data would previously have always leaked in application code and
3735 workarounds were in place to make the memory debugging turn a blind eye
3736 to it. Application code that doesn't use this new function will still
3737 leak as before, but their memory debugging output will announce it now
3738 rather than letting it slide.
3740 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3741 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3742 has a return value to indicate success or failure.
3745 *) Make it possible to replace the underlying "ERR" functions such that the
3746 global state (2 LHASH tables and 2 locks) is only used by the "default"
3747 implementation. This change also adds two functions to "get" and "set"
3748 the implementation prior to it being automatically set the first time
3749 any other ERR function takes place. Ie. an application can call "get",
3750 pass the return value to a module it has just loaded, and that module
3751 can call its own "set" function using that value. This means the
3752 module's "ERR" operations will use (and modify) the error state in the
3753 application and not in its own statically linked copy of OpenSSL code.
3756 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3757 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3758 the operation, and provides a more encapsulated way for external code
3759 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3760 to use these functions rather than manually incrementing the counts.
3762 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3765 *) Add EVP test program.
3768 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3771 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3772 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3773 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3774 These allow a CRL to be built without having to access X509_CRL fields
3775 directly. Modify 'ca' application to use new functions.
3778 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3779 bug workarounds. Rollback attack detection is a security feature.
3780 The problem will only arise on OpenSSL servers when TLSv1 is not
3781 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3782 Software authors not wanting to support TLSv1 will have special reasons
3783 for their choice and can explicitly enable this option.
3784 [Bodo Moeller, Lutz Jaenicke]
3786 *) Rationalise EVP so it can be extended: don't include a union of
3787 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3788 (similar to those existing for EVP_CIPHER_CTX).
3793 EVP_MD_CTX_init(&md); /* new function call */
3794 EVP_DigestInit(&md, EVP_sha1());
3795 EVP_DigestUpdate(&md, in, len);
3796 EVP_DigestFinal(&md, out, NULL);
3797 EVP_MD_CTX_cleanup(&md); /* new function call */
3801 *) Make DES key schedule conform to the usual scheme, as well as
3802 correcting its structure. This means that calls to DES functions
3803 now have to pass a pointer to a des_key_schedule instead of a
3804 plain des_key_schedule (which was actually always a pointer
3807 des_key_schedule ks;
3809 des_set_key_checked(..., &ks);
3810 des_ncbc_encrypt(..., &ks, ...);
3812 (Note that a later change renames 'des_...' into 'DES_...'.)
3815 *) Initial reduction of linker bloat: the use of some functions, such as
3816 PEM causes large amounts of unused functions to be linked in due to
3817 poor organisation. For example pem_all.c contains every PEM function
3818 which has a knock on effect of linking in large amounts of (unused)
3819 ASN1 code. Grouping together similar functions and splitting unrelated
3820 functions prevents this.
3823 *) Cleanup of EVP macros.
3826 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3827 correct _ecb suffix.
3830 *) Add initial OCSP responder support to ocsp application. The
3831 revocation information is handled using the text based index
3832 use by the ca application. The responder can either handle
3833 requests generated internally, supplied in files (for example
3834 via a CGI script) or using an internal minimal server.
3837 *) Add configuration choices to get zlib compression for TLS.
3840 *) Changes to Kerberos SSL for RFC 2712 compliance:
3841 1. Implemented real KerberosWrapper, instead of just using
3842 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3843 2. Implemented optional authenticator field of KerberosWrapper.
3845 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3846 and authenticator structs; see crypto/krb5/.
3848 Generalized Kerberos calls to support multiple Kerberos libraries.
3849 [Vern Staats <staatsvr@asc.hpc.mil>,
3850 Jeffrey Altman <jaltman@columbia.edu>
3851 via Richard Levitte]
3853 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3854 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3855 values for each of the key sizes rather than having just
3856 parameters (and 'speed' generating keys each time).
3859 *) Speed up EVP routines.
3862 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3863 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3864 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3865 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3867 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3868 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3869 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3872 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3874 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3877 *) Added the OS2-EMX target.
3878 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3880 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3881 to support NCONF routines in extension code. New function CONF_set_nconf()
3882 to allow functions which take an NCONF to also handle the old LHASH
3883 structure: this means that the old CONF compatible routines can be
3884 retained (in particular wrt extensions) without having to duplicate the
3885 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3888 *) Enhance the general user interface with mechanisms for inner control
3889 and with possibilities to have yes/no kind of prompts.
3892 *) Change all calls to low level digest routines in the library and
3893 applications to use EVP. Add missing calls to HMAC_cleanup() and
3894 don't assume HMAC_CTX can be copied using memcpy().
3895 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3897 *) Add the possibility to control engines through control names but with
3898 arbitrary arguments instead of just a string.
3899 Change the key loaders to take a UI_METHOD instead of a callback
3900 function pointer. NOTE: this breaks binary compatibility with earlier
3901 versions of OpenSSL [engine].
3902 Adapt the nCipher code for these new conditions and add a card insertion
3906 *) Enhance the general user interface with mechanisms to better support
3907 dialog box interfaces, application-defined prompts, the possibility
3908 to use defaults (for example default passwords from somewhere else)
3909 and interrupts/cancellations.
3912 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3913 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3916 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3917 tidy up some unnecessarily weird code in 'sk_new()').
3918 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3920 *) Change the key loading routines for ENGINEs to use the same kind
3921 callback (pem_password_cb) as all other routines that need this
3925 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3926 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3927 than this minimum value is recommended.
3930 *) New random seeder for OpenVMS, using the system process statistics
3931 that are easily reachable.
3934 *) Windows apparently can't transparently handle global
3935 variables defined in DLLs. Initialisations such as:
3937 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3939 wont compile. This is used by the any applications that need to
3940 declare their own ASN1 modules. This was fixed by adding the option
3941 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3942 needed for static libraries under Win32.
3945 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3946 setting of purpose and trust fields. New X509_STORE trust and
3947 purpose functions and tidy up setting in other SSL functions.
3950 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3951 structure. These are inherited by X509_STORE_CTX when it is
3952 initialised. This allows various defaults to be set in the
3953 X509_STORE structure (such as flags for CRL checking and custom
3954 purpose or trust settings) for functions which only use X509_STORE_CTX
3955 internally such as S/MIME.
3957 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3958 trust settings if they are not set in X509_STORE. This allows X509_STORE
3959 purposes and trust (in S/MIME for example) to override any set by default.
3961 Add command line options for CRL checking to smime, s_client and s_server
3965 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3966 are set then the CRL is looked up in the X509_STORE structure and
3967 its validity and signature checked, then if the certificate is found
3968 in the CRL the verify fails with a revoked error.
3970 Various new CRL related callbacks added to X509_STORE_CTX structure.
3972 Command line options added to 'verify' application to support this.
3974 This needs some additional work, such as being able to handle multiple
3975 CRLs with different times, extension based lookup (rather than just
3976 by subject name) and ultimately more complete V2 CRL extension
3980 *) Add a general user interface API (crypto/ui/). This is designed
3981 to replace things like des_read_password and friends (backward
3982 compatibility functions using this new API are provided).
3983 The purpose is to remove prompting functions from the DES code
3984 section as well as provide for prompting through dialog boxes in
3985 a window system and the like.
3988 *) Add "ex_data" support to ENGINE so implementations can add state at a
3989 per-structure level rather than having to store it globally.
3992 *) Make it possible for ENGINE structures to be copied when retrieved by
3993 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
3994 This causes the "original" ENGINE structure to act like a template,
3995 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3996 operational state can be localised to each ENGINE structure, despite the
3997 fact they all share the same "methods". New ENGINE structures returned in
3998 this case have no functional references and the return value is the single
3999 structural reference. This matches the single structural reference returned
4000 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4004 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4005 needs to match any other type at all we need to manually clear the
4009 *) Changes to the "openssl engine" utility to include;
4010 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4011 about an ENGINE's available control commands.
4012 - executing control commands from command line arguments using the
4013 '-pre' and '-post' switches. '-post' is only used if '-t' is
4014 specified and the ENGINE is successfully initialised. The syntax for
4015 the individual commands are colon-separated, for example;
4016 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4019 *) New dynamic control command support for ENGINEs. ENGINEs can now
4020 declare their own commands (numbers), names (strings), descriptions,
4021 and input types for run-time discovery by calling applications. A
4022 subset of these commands are implicitly classed as "executable"
4023 depending on their input type, and only these can be invoked through
4024 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4025 can be based on user input, config files, etc). The distinction is
4026 that "executable" commands cannot return anything other than a boolean
4027 result and can only support numeric or string input, whereas some
4028 discoverable commands may only be for direct use through
4029 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4030 pointers, or other custom uses. The "executable" commands are to
4031 support parameterisations of ENGINE behaviour that can be
4032 unambiguously defined by ENGINEs and used consistently across any
4033 OpenSSL-based application. Commands have been added to all the
4034 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4035 control over shared-library paths without source code alterations.
4038 *) Changed all ENGINE implementations to dynamically allocate their
4039 ENGINEs rather than declaring them statically. Apart from this being
4040 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4041 this also allows the implementations to compile without using the
4042 internal engine_int.h header.
4045 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4046 'const' value. Any code that should be able to modify a RAND_METHOD
4047 should already have non-const pointers to it (ie. they should only
4048 modify their own ones).
4051 *) Made a variety of little tweaks to the ENGINE code.
4052 - "atalla" and "ubsec" string definitions were moved from header files
4053 to C code. "nuron" string definitions were placed in variables
4054 rather than hard-coded - allowing parameterisation of these values
4055 later on via ctrl() commands.
4056 - Removed unused "#if 0"'d code.
4057 - Fixed engine list iteration code so it uses ENGINE_free() to release
4058 structural references.
4059 - Constified the RAND_METHOD element of ENGINE structures.
4060 - Constified various get/set functions as appropriate and added
4061 missing functions (including a catch-all ENGINE_cpy that duplicates
4062 all ENGINE values onto a new ENGINE except reference counts/state).
4063 - Removed NULL parameter checks in get/set functions. Setting a method
4064 or function to NULL is a way of cancelling out a previously set
4065 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4066 and doesn't justify the extra error symbols and code.
4067 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4068 flags from engine_int.h to engine.h.
4069 - Changed prototypes for ENGINE handler functions (init(), finish(),
4070 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4073 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4074 to the algorithm using long division. The binary algorithm can be
4075 used only if the modulus is odd. On 32-bit systems, it is faster
4076 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4077 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4078 up to 450 bits. In 64-bit environments, the binary algorithm
4079 appears to be advantageous for much longer moduli; here we use it
4080 for moduli up to 2048 bits.
4083 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4084 could not support the combine flag in choice fields.
4087 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4088 extensions from a certificate request to the certificate.
4091 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4092 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4093 file: this allows the display of the certificate about to be
4094 signed to be customised, to allow certain fields to be included
4095 or excluded and extension details. The old system didn't display
4096 multicharacter strings properly, omitted fields not in the policy
4097 and couldn't display additional details such as extensions.
4100 *) Function EC_POINTs_mul for multiple scalar multiplication
4101 of an arbitrary number of elliptic curve points
4102 \sum scalars[i]*points[i],
4103 optionally including the generator defined for the EC_GROUP:
4104 scalar*generator + \sum scalars[i]*points[i].
4106 EC_POINT_mul is a simple wrapper function for the typical case
4107 that the point list has just one item (besides the optional
4111 *) First EC_METHODs for curves over GF(p):
4113 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4114 operations and provides various method functions that can also
4115 operate with faster implementations of modular arithmetic.
4117 EC_GFp_mont_method() reuses most functions that are part of
4118 EC_GFp_simple_method, but uses Montgomery arithmetic.
4120 [Bodo Moeller; point addition and point doubling
4121 implementation directly derived from source code provided by
4122 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4124 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4125 crypto/ec/ec_lib.c):
4127 Curves are EC_GROUP objects (with an optional group generator)
4128 based on EC_METHODs that are built into the library.
4130 Points are EC_POINT objects based on EC_GROUP objects.
4132 Most of the framework would be able to handle curves over arbitrary
4133 finite fields, but as there are no obvious types for fields other
4134 than GF(p), some functions are limited to that for now.
4137 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4138 that the file contains a complete HTTP response.
4141 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4142 change the def and num file printf format specifier from "%-40sXXX"
4143 to "%-39s XXX". The latter will always guarantee a space after the
4144 field while the former will cause them to run together if the field
4145 is 40 of more characters long.
4148 *) Constify the cipher and digest 'method' functions and structures
4149 and modify related functions to take constant EVP_MD and EVP_CIPHER
4153 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4154 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4157 *) Modify EVP_Digest*() routines so they now return values. Although the
4158 internal software routines can never fail additional hardware versions
4162 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4164 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4165 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4168 ERR_R_NESTED_ASN1_ERROR
4170 ERR_R_MISSING_ASN1_EOS
4171 were 4 .. 9, conflicting with
4172 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4174 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4175 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4177 Add new error code 'ERR_R_INTERNAL_ERROR'.
4180 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4184 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4185 sets the subject name for a new request or supersedes the
4186 subject name in a given request. Formats that can be parsed are
4187 'CN=Some Name, OU=myOU, C=IT'
4189 'CN=Some Name/OU=myOU/C=IT'.
4191 Add options '-batch' and '-verbose' to 'openssl req'.
4192 [Massimiliano Pala <madwolf@hackmasters.net>]
4194 *) Introduce the possibility to access global variables through
4195 functions on platform were that's the best way to handle exporting
4196 global variables in shared libraries. To enable this functionality,
4197 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4198 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4199 is normally done by Configure or something similar).
4201 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4202 in the source file (foo.c) like this:
4204 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4205 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4207 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4208 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4210 OPENSSL_DECLARE_GLOBAL(int,foo);
4211 #define foo OPENSSL_GLOBAL_REF(foo)
4212 OPENSSL_DECLARE_GLOBAL(double,bar);
4213 #define bar OPENSSL_GLOBAL_REF(bar)
4215 The #defines are very important, and therefore so is including the
4216 header file everywhere where the defined globals are used.
4218 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4219 of ASN.1 items, but that structure is a bit different.
4221 The largest change is in util/mkdef.pl which has been enhanced with
4222 better and easier to understand logic to choose which symbols should
4223 go into the Windows .def files as well as a number of fixes and code
4224 cleanup (among others, algorithm keywords are now sorted
4225 lexicographically to avoid constant rewrites).
4228 *) In BN_div() keep a copy of the sign of 'num' before writing the
4229 result to 'rm' because if rm==num the value will be overwritten
4230 and produce the wrong result if 'num' is negative: this caused
4231 problems with BN_mod() and BN_nnmod().
4234 *) Function OCSP_request_
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